It also acts as an accessory muscle of respiration, along with the scalene muscles of the neck. Unilaterally: Elevate the scapula, downwardly rotate scapula, laterally flex the head and neck, rotate the head and neck, Spinous processes of all vertebrae except C-1, Bilaterally: Extend the vertebral column
Some larger muscles are labeled. Sternocleidomastoid and the Scalenes are Synergists, which mean that they work together to provide the same movements (flexion, rotation and lateral flexion of the head and neck)An Antagonist. Acromio-deltoid (Middle portion of deltoid) Action: Abducts humerus Synergist: Supra-spinatus Occasionally, the lower portion of the SCM muscle is intercepted by tendinous intersections which indicate the origin of this muscle from different myotomes .The organizational pattern of the SCM can be arranged into five distinct topographical parts, namely the superficial sternomastoid, profound sternomastoid, sterno occipital, cleidomastoid and cleidooccipital parts which are arranged in superficial and deep layers. Synergist: Gastrocnemius, Action: Flexes toes I give my consent to Physiopedia to be in touch with me via email using the information I have provided in this form for the purpose of news, updates and marketing. What are the muscles of the Belly? Antagonist: Digastric Which of the following muscles is used in breathing? Which of the following muscles is not innervated by the median nerve? See examples of antagonist muscles. A. sternocleidomastoid muscles B. scalene muscles C. pectoralis major D. masseter, Which muscle is directly superior to the trapezius? Synergist: external intercostals. Lower: Serratus anterior, pectoralis minor, spine extensors, Upper: Rhomboids, neck flexors
The Anatomy of the Sternocleidomastoid Muscle. As the muscles contract across the shoulder joint it brings your shoulder upward into flexion as you push the ball the opposite happens and the antagonist becomes your deltoid and the latissimus dorsi becomes your agonist. Other functions of the SCM include assisting in breathing, maintaining neck posture, and helping the temporomandibular joint (TMJ) function. a) orbicularis oris b) platysma c) orbicularis oculi d) sternocleidomastoid, What muscle is directly lateral to the sternohyoid? Antagonist: Pronator teres Structure [ edit] Advertisement Middle Trapezius Synergist: abductor pollicis longus, Action: Flexed thumb a) temporalis. Anatomy of the Human Body. In an antagonistic muscle pair, as one muscle contracts, the other muscle relaxes or lengthens. (a) Biceps brachii (b) Latissimus dorsi (c) Pectoralis major (d) Subscapularis. Synergist: Extensor hallucis longus, Action: Extends big toe Which of the following is the term that describes the relation of brachioradialis to biceps brachii during forearm flexion? Antagonist: Extensor digitorium longus Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Synergist: rectus femoris, Action: Extends knee and stabilizes it. - a synergist - an antagonist - a fixator - a prime mover - an antagonist. a) Clavicle b) Cervical vertebrae c) Scapula d) Sacrum. If there were(10)\overset{\text{(10)}}{{\underline{\text{were}}}}were(10) no date line, he or she would arrive home with a watch whose date is a day off from everyone else's. Synergist: Temporalis, Action: Closes jaw The supraclavicularis muscle arises from the manubrium behind the sternocleidomastoid and passes behind the sternocleidomastoid to the upper surface of the clavicle. Also, the muscle works with the scalene muscles in the neck during forced inspiration while breathing. The SCM is part of a group of muscles known as the anterolateral neck flexors. [5][6] It supplies only motor fibres. Variations Of The Sternocleidomastoid Muscle: A Literature Review. Synergist: Extensor hallucis longus, Action: Prime mover of toe extension d) lateral pterygoid. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Synergist: Pectoralis major Antagonist: Spino-deltoid. When one side acts alone, it causes the head to rotate to the opposite side and flexes laterally to the same side (ipsilaterally). Synergist: Action: stabilizes pelvis Which of the following muscles is most active during extension of the arm/glenohumeral joint? Available from: T Hasan. a. Longissimus. Such cases represent the developmental defect of muscular agenesis and are diagnosed by Ultrasound or Magnetic Resonance Imaging scans. 2023 Dotdash Media, Inc. All rights reserved. What is the antagonist muscle in elbow flexion? Upper region of medial border and superior angle of scapula. K. irascible Is this considered flexion or extension? c) brachialis. The positive effects of physical activity and exercise on almost all functions of the human body are widely acknowledged. Sternothyroid is a paired strap muscle located in the muscular triangle of the neck.It is a part of a group of muscles called the infrahyoid muscles.There are four such muscles that are grouped into superficial and deep layers. G. enmity Treatment of a shortened SCN involves gentle stretching of a tight SCM muscle to lengthen it to a normal shape. Rotation of the head to the opposite side or obliquely rotate the head. [7], The sternocleidomastoid is within the investing fascia of the neck, along with the trapezius muscle, with which it shares its nerve supply (the accessory nerve). Which of the following muscles is primarily a postural muscle? c. Spinalis. https://www.kenhub.com/en/library/anatomy/sternocleidomastoid-muscle, https://www.youtube.com/watch?v=eD3Ds3GIt9M, https://www.physio-pedia.com/index.php?title=Sternocleidomastoid&oldid=299309, a medial rounded and tendinous sternal head (SH). When refering to evidence in academic writing, you should always try to reference the primary (original) source. Antagonist: infraspinatus Lateral surface of the mastoid process through a strong tendon, and to the lateral half of superior nucheal line through an aponeurosis. Primary Actions of the Sternocleidomastoid. Just check all flip PDFs from the author ibed_guidance. The thickness of the CH is variable. Antagonist: Flexor carpi ulnaris [3] When both sides of the muscle act together, it flexes the neck and extends the head. Action: Rotates scapula so that its inferior angle moves laterally and upward; important in horizontal movements of arm (pushing and . Head and neck to opposite side, elevate the scapula, upwardly rotate the scapula
Antagonist: deltoid Why did medieval Europe's attitudes toward Jews change? M. lavish Read the entire passage once to get a general idea of what it is about. Meanwhile, a muscle with the opposite action of the prime mover is called an antagonist. The absence of SCM cover may lead to complicated congenital neck hernias in children, in addition to functional limitations. In most cases Physiopedia articles are a secondary source and so should not be used as references. The splenius captis is located on the lateral side of the C7. Clavicular Head:Superior surface of the medial one-third of the clavicle, Insertion: Lateral surface of the mastoid process, the lateral half of the superior nuchal line, Actions: The splenius captis is located on the lateral side of the C7. Peripheral Nerve Surgical Procedures for Cervical Dystonia", "64 Cranial Nerve XI: The Spinal Accessory Nerve", https://en.wikipedia.org/w/index.php?title=Sternocleidomastoid_muscle&oldid=1134499511. load is the weight of the object. Treatment for this involves strengthening exercises for the SCM muscle, and repair of the nerve if possible. However, they can be effectively utilized for muscle flap harvests. a. Digastric b. Mylohyoid c. Omohyoid d. Sternocleidomastoid. It is mandatory to procure user consent prior to running these cookies on your website. Synergist: pectineus, Action: Flexes knew Action: Pulls lower lip down to expose lower teeth, Action: Pulls corners of mouth down and lateral, Action: Compresses cheeks as in whistling, Action: Primer mover to close jaw Which of the following muscle is most active during the abductive of the arm? a) Splenius capitis b) Semispinalis capitis c) Sternocleidomastoid d) Trapezius, What are attachments for these muscles, and their functions? To explain skeletal muscle movements as activities of agonists (prime movers), antagonists, and synergists. This little fleet altho' not quite so respectable as those of Columbus or Capt. An impairment or injury to the spinal accessory nerve can cause weakness or paralysis to the SCM. Which muscle depresses the clavicle and stabilizes the pectoral girdle? Their antagonists are the muscles. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". 5th Edition. This page was last edited on 19 January 2023, at 00:36. a) Biceps brachii muscle b) Pronator teres c) Flexor carpi radialis d) Brachialis. Treatment involves physiotherapy exercises to stretch the involved muscle and strengthen the muscle on the opposite side of the neck. Together, they function in swallowing, chewing, and speech, serve as important surgical landmarks in neck dissections and are used routinely for reconstruction. Pain was induced by injections of hypertonic saline . MedlinePlus, U.S. National Library of Medicine. These cookies will be stored in your browser only with your consent. Sternocleidomastoid Antagonists: Same muscles on the contralateral side Semispinalis capitis Semispinalis cervicis Multifidus Sternocleidomastoid Anterior scalene, middle scalene, the rotatores, and longus colli (inferior oblique) assist with contralateral rotation of the head and cervical spine. The Internet Journal of Human Anatomy, 2010, Kaur D et al. 0. Synergist: Biceps brachii, Action: Pronates forearm What experience do you need to become a teacher? a) Sternocleidomastoid b) Gastrocnemius c) Gluteus maximus d) Flexor carpi radialis e) None of the above; 1. A. prime mover (agonist) B. antagonist C. synergist D. fixator E. origin F. insertion, Which muscle extends the elbow? Contralateral rotation of the head and cervical spine when acting unilaterally. The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist. Sternocleidomastoid (Action, Synergist, Antagonist, BodyBuilder (Y/N)) Action: Flexes or Rotates the Head Synergist: N/A Antagonist: N/A BodyBuilder: Yes . Synergist: gluteus maximus, Action: extends knee and stabilizes it The antagonist of the splenius capitis muscle is the Sternocleidomastoid. Antagonist Muscles On the opposite side of the body from the multifidus and erector spinae are the abdominal muscles. Internet Journal of Medical Update 2013; 8(2):62-64, Sternocleidomastoid muscle (highlighted in green) - anterior view image - Kenhub, Sternocleidomastoid muscle video - Kenhub, Gray, Henry. These cookies do not store any personal information. (b) Ansa cervicalis. d) biceps brachii. (a) Latissimus dorsi (b) Infraspinous (c) Supraspinous (d) Subscapularis. You also have the option to opt-out of these cookies. It is partially covered by the gluteus maximus. Middle Fibers: elevation, upward rotation and adduction of the scapula. a. supraspinatus b. rhomboids c. deltoid d. infraspinatous. The occurrence of such a variation can be explained by fusion failure or abnormal mesodermal splitting during development. When both SCM muscles contract, the movements can include: Simultaneous bilateral SCM muscle contraction also plays a role in the breathing process. Synergist: Splenius, Action: adducts and medially rotates arm (a) Teres major (b) Supraspinatus (c) Biceps brachii (d) Brachialis (e) Pectoralis major. A. abductor pollicis brevis B. flexor pollicis longus C. medial heads of flexor digitorum profundus D. superficial head of flexor pollicis brevis E. pronator quadratus, Which of the following muscles are innervated by the trigeminal nerve? Antagonist: Triceps brachii Antagonist: Scalenes Antagonist: triceps brachii antagonist muscle that opposes the action of an agonist extension an increase in joint angle with movement fixator synergist that assists an agonist by preventing or reducing movement at another joint, thereby stabilizing the origin of the agonist flexion a decrease in joint angle with movement insertion a. Levator scapulae b. Pectoralis minor c. Rhomboid d. Serratus anterior e. Trapezius, Which of the following muscles is the prime flexor of the arm at the shoulder joint? The sternocleidomastoid muscle is a two-headed neck muscle, which true to its name bears attachments to the manubrium of sternum (sterno-), the clavicle (-cleido-), and the mastoid process of the temporal bone (-mastoid). Read more, Physiopedia 2023 | Physiopedia is a registered charity in the UK, no. Sternocleidomastoid Synergists Scalenes, opposite side of splenius capitis Sternocleidomastoid Antagonists Upper Traps, opposite side of the SCM Scalenes Origin Anterior,Medial, and Posterior Transverse Processes of the Cervical Vertabrae Scalenes Insertion Anterior Insertion- First Rib Medial Insertion- First Rib Posterior Insertion- Second Rib These cookies ensure basic functionalities and security features of the website, anonymously. c) pectoralis major. (d) Segmental branches. The mutual links between muscle pain and resting electromyographic (EMG) activity are still controversial. a. teres major b. infraspinatus c. latissimus dorsi d. subscapularis, Which of the following muscles does not exert a force on the upper extremity during contraction? Many actions in the body do have one muscle that is responsible for more of the work in that action than any other muscle. Muscles and nerves MBLEx. In this case, it lifts up the breastbone and the area of the collarbones that are nearest to the midline of the body. This tent is in the Indian stile formed of a number of (8) dressed Buffaloe skins sewed together with sinues. Unilaterally: Rotation of head to the opposite side, lateral flexion of the neck on the same side Action: Flexes or rotates the head Synergist: None Antagonist: None. [2] Itprotects the vertical neurovascular bundle of neck, branches of cervical plexus, deep cervical lymph nodes and soft tissues of neck from damage[2], Image: Sternocleidomastoid muscle (highlighted in green) - anterior view[3], This 2 minute video is a good summary of the sternocleidomastoid muscle. Synergist muscles help other muscles perform one or more functions. Sternocleidomastoid muscle 32 languages The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. The superficial layer includes sternohyoid and omohyoid, while the deep layer is made up of sternothyroid and thyrohyoid. Synergist: Gluteus maximus, Action: Medially rotates leg at thigh Flexion of the head and cervical spine when anterior fibers act bilaterally Agonists: Longus Capitis Antagonists: Longissimus Capitis Spinalis Capitis Splenius Capitis Semispinalis Capitis Sternocleidomastoid (posterior fibers) 3. [3][4] The sternocleidomastoid is thick and narrow at its centre, and broader and thinner at either end. Explore antagonistic muscles. It is sometimes also called the "prime mover". Muscle overlays on the human body. Antagonist: NA The sternocleidomastoid muscles flex the neck and the splenius cervicis muscles extend it. Such a phenomenon describes Sinohara's law of separation which states that two muscles( SCM and trapezius ) having common nerve supply ( accessory nerve ) are derived from a common muscle mass8. Synergist: Gastrocnemius, Action:Flexes big toe Synergist: sartorious, Action: adducts, flexes and medially rotates thigh Antagonist: Palmaris longus Synergists and Antagonists Synergists - are groups of muscles working together to cause movement Insert a caret (^) to show where the word only should be placed to match the meaning in parentheses. Synergist: rectus femoris, Muscles of the Forearm & Hand(Bio 107: Anatom, Head and Neck Muscles - Action, Antagonist, S, Muscles of the Forearm That Move Wrist, Hand, Byron Almen, Dorothy Payne, Stefan Kostka, Eric Hinderaker, James A. Henretta, Rebecca Edwards, Robert O. Self, By the People: A History of the United States, AP Edition. Gluteus maximus Synergist: Supinator, Action: Abducts and extends thumb (b) The glenohumeral joint allows for movement in which dimensions? Churchill Livingstone. process of using agonist and synergist to dynamically move the joint into range of motion. Get access to this video and our entire Q&A library. a) Temporalis b) Rectus abdominis c) Erector spinae d) Sternocleidomastoid e) Splenius capitis. Necessary cookies are absolutely essential for the website to function properly. (a) biceps brachii (b) triceps brachii (c) jaw (d) tongue. Lower: Levator Scapulae. Enterta[in]ing as I do, the most confident hope of succeeding in a voyage which had formed a (7) da[r]ling project of mine for the Which of the following muscles extends the head on the neck? Antagonist: Tibialis Anterior Torticollis. Antagonist: rhomboids Encircles mouth, inserts into muscle/skin at mouth angle. For example, the SCM on the right side of your neck tilts your head to your right. What muscle(s) serves as an antagonist to the biceps? a. Levator scapulae b. Pectoralis minor c. Rhomboid d. Serratus anterior e. Trapezius. joint act as a fulcrum. The SCM inserts behind the ear at the mastoid process, a projection of the. a) Gluteus maximus b) Iliopsoas c) Extensor hallucis longus d) Lumbricals e) Dorsal interosseous, Which of the following muscles acts primarily to plantarflex toes 2-5? Synergist: palmaris longus, Action: Tenses skin & fascia of palm a. Frontalis b. Occipitalis c. Masseter d. Sternocleidomastoid e. Rectus Abdominis f. Pectoralis Minor g. Pectoralis Major h. Supraspinatus i. Infraspinatus j. Subscapularis, All of the muscles that move the glenohumeral joint have a distal attachment on the humerus, except one. Which of the following muscles does not attach to the humerus? The muscle allows the head and vertebrae to extend. skeletal muscle is attached to bone at origin and insertion. (I bought one thing for Dad. Furthermore, they are components of the boundaries of the submental and submandibular triangles of the neck. A. a) biceps femoris b) brachioradialis c) triceps brachii d) pectoralis major e) deltoid. J. Ashton . a) sternocleidomastoid b) orbicularis oculi c) trapezius d) platysma, Which muscle acts to anchor the scapula? Antagonist: Sartorious Action: When it is acting superiorly, it elevates the 1st rib as in the process of inhalation; inferiorly, assists in flexion and rotation of the neck. In the blank, insert the most appropriate word. Antagonist: Splenius Synergist: Platysma Sternocleidomastoid Action: Flexes neck forward when together Antagonist: Temporalis Synergist: Scalenes Flickr Creative Commons Images Some images used in this set are licensed under the Creative Commons through Flickr.com. Antagonist: Gracilis Lateral flexion of the head and cervical spine when acting unilaterally, Antagonists:Splenius Capitis contralateral side, 4. The biceps brachii functions to pull the radius of the lower arm toward the body. Vascular supply: Muscular branches of the ascending Cervical artery. You also have the option to opt-out of these cookies. KenHub. The sternocleidomastoid muscle has a cylindrical, strap-like shape that emerges from the side of your neck and tapers at the ends. After a signal reaches the accessory nerve nucleus in the anterior horn of the spinal cord, the signal is conveyed to motor endplates on the muscle fibers located at the clavicle. Antagonist: extensor carpi ulnaris antagonist: tensor fasciae latae, gluteal minimus, medius muscles, synergist: sartorius Differentiate between: a. Bilateral SCM muscle contraction thrusts the chin forward when your head is level. The neck muscles are responsible for stabilizing and moving the head in every direction and for pulling the jaw and skull towards the chest. The party are in excellent health and sperits, zealously attached to the enterprise, and anxious to proceed; not a whisper or murmur or discontent to be heard among them, but all act in unison, and with the most perfict harmony. antagonist: hamstring muscles, synergist: adductor muscles, gracilis Synergist: serratus anterior, Action: Moves scapula towards chest wall e) buccinator. antagonist: tensor fasciae latae, gluteal minimus, and medius muscles, synergist: adductor muscles and gracilis sternocleidomastoid synergist and antagonist However, you may visit "Cookie Settings" to provide a controlled consent. Synergist: Sarotious, Action: Abducts and medially rotates thigh Prime mover, Synergist, Antagonistic muscles.wmv Vitamin D and diabetes Dr. John Campbell 3 days ago New Muscle Spindle & Stretch Reflex || Knee Jerk Reflex Elbow joint. Which of the following groups of muscles does not move the vertebral column? antagonist: triceps brachii, synergist: external and internal obliques Upload your PDF on PubHTML5 and create a flip PDF like Seeleys essentials of anatomy physiology ( etc. Action: Pulls ribs forward antagonist: tibialis anterior, synergist: hamstring muscles, gracilis, gastrocnemius, sartorius For intermediary anatomy students learning skeletal and muscle structure. O pectoralis major O latissimus dorsi O deltoid O biceps brachii, Protrusion-Retrusion involves the movements of which muscle? The passage is written by Lewis and dated April 7, 1805. Antagonist: pectoralis major By Anne Asher, CPT Bilaterally: Stabilizes the head, flexion of the head and neck, checkreins backwardmotion of the head and neck, Innervation:Accessory nerve: cranial nerve XII and ventral rami of the (C2, C3), Blood Supply:Branches from the vertebral artery, 1. In the space at the left, write the letter of the pair of words related to each other in the same way as the capitalized pair. Which muscle acts as a synergist with pectorals minor during abduction of the scapula? (a) abductor pollicis longus (b) anconeus and triceps brachii (c) biceps brachii and supinator (d) extensor carpi ulnaris (e) flexor digitorum profundus. Which of the muscles is involved in the pronation of the forearm? b) orbicularis oris. Synergist or Antagonist DRAFT.
A. biceps brachii B. brachialis C. brachioradialis D. triceps brachii, Which of the following muscles is a developmentally dorsal muscle of the upper limb? The information provided on this site is not a substitute for a physical consultation with a medical professional. An aponeurosis is a broad flat expanse of tendon. Some authors regard such fusions to be a normal developmental feature , due to their common derivation from the post- sixth branchial arch. What is the relationship between these muscles when bowing your head? This muscle binds the skull to the sternum and clavicle. Antagonist: NA Kapandji, I.A., "The Physiology of the Joints". This cookie is set by GDPR Cookie Consent plugin. A neck extension movement that takes place at your first. (a) What does the king specify as his wish for Mari Djata? a. soleus b. tibialis anterior c. flexor digitorum longus d. gracilis e. extensor digitorum brevis, Which shoulder joint muscle is associated with humeral abduction, flexion, horizontal adduction, and internal rotation? They cause formation of supernumerary lesser supraclavicular fosse. Antagonist: Sternocleidomastoid; Longus colli and capitis; Scalenus anterior, . antagonist: triceps brachii, synergist: biceps brachii What are various methods available for deploying a Windows application? The other head attaches to the top part (called the superior aspect) of the collarbone, near the midline of the body. A coexisting unilateral absence of SCM with the ipsilateral absent trapezius is an extremely rare variation and till date, only about three such reports are present in literature .Such cases present with cosmetic and functional impairment and are best diagnosed by Magnetic Resonance Imaging scans. Along the muscle fibers are t-tubule openings which facilitate the spread of the action potential into the muscle fibers. Action: draws eyebrows together and inferiorly; wrinkles forehead vertically (frowning) Action: bilaterally- flexes & rotates lumbar region; compresses abdomen; unilaterally- trunk rotation and lateral flexion. The muscle fibers of all these layers lie within a common fascial sheath and traverse in the same direction.Knowledge of this layered arrangement and the changes in cases of muscle variations is helpful during muscle flap harvesting procedures. But opting out of some of these cookies may affect your browsing experience. Which of the following muscles is part of the rotator cuff? The fibers from the accessory nerve nucleus travel upward to enter the cranium via the foramen magnum. Which of the following muscles is an elbow extensor? There are reports of a broad clavicular head splitting into multiple small muscular slips. B), Which large muscle has an attachment on the external occipital protuberance and extends the neck? [3] It travels obliquely across the side of the neck and inserts at the mastoid process of the temporal bone of the skull by a thin aponeurosis. Other functions of the SCM include assisting in breathing, maintaining neck posture, and helping the temporomandibular joint (TMJ) function. 3 months ago. antagonist: adductor group, gracilis, synergist: gluteus medius, gluteus minimus, gluteus maximus I bought Dad^a screwdriver set for Christmas. Synergist: flexor digitorium superficialis, Action: Synergist to supinate arm (Sternocleidomastoid synergist) Muscle Origin Insertion Action Muscle that Move the Pectoral Girdle Trapezius Occipital bone, ligamentum nuchae, spinous process C 7 - T 12. antagonist: deltoid, teres minor, infraspinatus, synergist: pectoralis major and serratus anterior, synergist: latissimus dorsi, subscapularis, teres major, biceps brachii, latissimus dorsi, deltoid, synergist: pectoralis minor Which of these muscles is the prime mover of elbow extension? Muscles have a point of origin and a point of insertion origin - (head) - normally is more stationary than insertion insertion - undergoes more movement. Synergist: flexor pollicis longus, Action: abducts hand b. Quadratus lumborum. last ten years, I could but esteem this moment of my departure as among the most happy of my life. Synergist: Psoas, Action: stabilizes pelvis The antagonist of the splenius capitis muscle is the Sternocleidomastoid. The two heads are separated by a triangular surface depression, the lesser supraclavicular fossa. Drug combinations may exhibit synergistic or antagonistic effects. Anatomical Attachments: Origin: The Sternal head attaches to the manubrium of the sternum; the Clavicular head attaches to the medial third of the clavicle. antagonist: quadriceps femoris muscles, synergist: adductor muscles on 2022-08-08. Read our. Antagonist: Adductor mangus The cookie is used to store the user consent for the cookies in the category "Performance". Antagonist: Soleus Antagonist: Gluteus maximus Antagonist: Supinator Which muscles make up the common flexor tendon of the medial epicondyle? The antagonist of the splenius capitis muscle is the Sternocleidomastoid. Michael Menna, DO, is a board-certified, active attending emergency medicine physician at White Plains Hospital in White Plains, New York. supraclavicularis muscle E. Scalenes. kleine weie friedenstaube text und noten. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. Synergist: pectoralis major, Action: Extends and medially rotates humerus (a) sternocleidomastoid (b) splenius capitis (c) semispinalis cervicis (d) scalenus anterior. Verywell Health's content is for informational and educational purposes only. E. desultory Six heads of origin of sternocleidomastoid muscle: a rare case. What is the synergist muscle for sternocleidomastoid? The deep muscles of the neck, levator scapulae and middle scalene muscle are supplied by which nerve? b) masseter. The sternal head is a round fasciculus, tendinous in front, fleshy behind, arising from the upper part of the front of the manubrium sterni. Antagonist: Gastrocnemius Which of the following muscles produces the main flexion of the elbow? Our vessels consisted of six small canoes, and two large (1) pirogues. Antagonist: Flexor carpi ulnaris Lateral flexion of the head and cervical spine when acting unilaterally Synergist: NA, Action: rotates and adducts scapula