A synergist that makes the insertion site more stable is called a fixator. The supraclavicularis muscle arises from the manubrium behind the sternocleidomastoid and passes behind the sternocleidomastoid to the upper surface of the clavicle. bones serve as levers. Synergist: Pronator teres, Action: Extends and abducts wrist Antagonist: Triceps When they flied(3)\overset{\text{(3)}}{{\underline{\text{flied }}}}flied(3) from Los Angeles to Sydney, Australia, they arrived at a time that was nearly 323232 hours later than the time when they left. 1 What is the synergist muscle for sternocleidomastoid? Antagonist: Gluteus maximus Did Marta's family fly(5)\overset{\text{(5)}}{{\underline{\text{fly}}}}fly(5) in a time machine on the way back from Sydney? Synergist: Gastrocnemius, Action: Flexes and rotates medially B. Abdominal. The antagonist of the splenius capitis muscle is the Sternocleidomastoid. Lateral flexion of the head and cervical spine when acting unilaterally, Antagonists:Splenius Capitis contralateral side, 4. A. Biceps brachii B. Brachialis C. Brachioradialis D. Triceps brachii, Which of the following muscles provides the greatest contribution to lateral rotation of the shoulder joint? Cook, were still viewed by us with as much pleasure as those deservedly famed adventurers ever ( 2 ) beheld theirs; and I dare say with quite as much anxiety for their safety and preservation. skeletal muscle is attached to bone at origin and insertion. Philadelphia: Lea and Febiger, 1918; Bartleby.com, 2000. antagonist: triceps brachii, synergist: biceps brachii Antagonist: sartorious The SCM is a unique muscle, in terms of variations at its origin.4,5,6 Also, it has a variable innervations arrangement, the classical anastomotic pattern being observed in 50% of the cases.These anatomical details have a pivotal role in the planning of pedicle muscle flaps in reconstructive surgeries. Use each word once. The sternocleidomastoid is the prime mover and the splenius cervicis is the synergist. Synergist: Pectoralis major Antagonist: Spino-deltoid. If you believe that this Physiopedia article is the primary source for the information you are refering to, you can use the button below to access a related citation statement. Antagonist: Psoas Share and download Seeleys essentials of anatomy physiology ( etc.) The two heads are separated by a triangular surface depression, the lesser supraclavicular fossa. Which of the following muscles does not attach to the humerus? But opting out of some of these cookies may affect your browsing experience. It covers the anterior surface of the neck superficially. antagonist: tensor fasciae latae, gluteal minimus, medius muscles, synergist: gastrocnemius Synergist: Sternohyoid Antagonist: Sternothyroid . - a synergist - an antagonist - a fixator - a prime mover - an antagonist. Middle deltoid c. Posterior deltoid d. Superior deltoid. "offense, offence". Antagonist: Biceps femoris Acetylcholine (ACH) is released from vesicles and is sent over the synaptic cleft to receptors on the postsynaptic bulb. It also acts as an accessory muscle of respiration, along with the scalene muscles of the neck. An impairment or injury to the spinal accessory nerve can cause weakness or paralysis to the SCM. Antagonist: Synergist: NA, Action: rotates and adducts scapula What is the relationship between these muscles when bowing your head? Synergist: Scalenes, Action: elevates hyoid bone 1 : an agent that increases the effectiveness of another agent when combined with it; especially : a drug that acts in synergism with another. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Necessary cookies are absolutely essential for the website to function properly. Advertisement Middle Trapezius Read the flipbook version of Seeleys essentials of anatomy physiology ( etc.). last ten years, I could but esteem this moment of my departure as among the most happy of my life. Antagonist: Digastric The sternocleidomastoid muscle flexes the neck and helps with movement of the head. Muscles that Act on the Scapula . indirect object. a. Subscapularis b. Pectoralis major c. Infraspinatus d. Supraspinatus e. Latissimus dorsi, Which of the following muscles is attached to the medial border of the ventral surface of scapula : a-levator scapula b-rhomboides minor c- rhomboides major d-serratus anterior, Which of the following intrinsic muscles of the hand do not make up the thenar eminence? On either side, the SCM diagonally divides the neck musculature into anterior (front) and posterior (back) triangles. 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? The SCN can produce several different neck movements. The sternocleidomastoid muscles flex the neck and the splenius cervicis muscles extend it. Synergist: Supinator, Action: Extends and flares fingers Createyouraccount. b) gastrocnemius. 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 Gives you the force to push the ball. About a dozen cases have reported complete unilateral absence of the muscle. [8], The triangle formed by the clavicle and the sternal and clavicular heads of the sternocleidomastoid muscle is used as a landmark in identifying the correct location for central venous catheterization. C. censure The cookie is used to store the user consent for the cookies in the category "Performance". The number of these extra clavicular slips may vary and such occurrence may be unilateral or bilateral. (a) Brachialis (b) Subscapularis (c) Teres minor (d) Supraspinous. However, as the state of mind in which we are, generally gives the (5) colouring to events, when the imagination is (6) suffered to wander into futurity, the picture which now presented itself to me was a most pleasing one. Clavo-Trapezius, Acromio-Trapezius, Spino-Trapezius, Pectoralis Minor, Levator Scapulae, Serratus . Underline nouns or pronouns that make up each one. Lateral flexion of the head and cervical spine when acting unilaterally a. Abductor pollicis brevis b. Opponens pollicis c. Flexor pollicis brevis d. Extensor pollicis longus, Which of the following muscles is (only) responsible for scapular protraction, downward rotation, and depression? Click to see the original works with their full license. A) The sternocleidomastoid is the prime mover, and the splenius cervicis is the fixator. antagonist; erector spinae, synergist: hamsting muscles [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). Name a muscle or muscle group and contraction type likely to be active when this person returns to an upright position after having touched their toes and the position this muscle must lie in relation to the vertebral column joints to perform that movemen. Top Contributors - Venus Pagare, Admin, Kim Jackson, Joao Costa, Daniele Barilla, WikiSysop, Joshua Samuel, Evan Thomas, Tarina van der Stockt and Lucinda hampton, Sternocleidomastoid (SCM) (synonym musculus sternocleidomastoideus)is a paired superficial muscle in the anterior portion of the neck. 3. This muscle binds the skull to the sternum and clavicle. The sternal head is a round fasciculus, tendinous in front, fleshy behind, arising from the upper part of the front of the manubrium sterni. The cookies is used to store the user consent for the cookies in the category "Necessary". Synergist: pectoralis major, Action: Flexes wrist and middle phalanges Accessory muscles of inhalation include? The information provided on this site is not a substitute for a physical consultation with a medical professional. Antagonist: NA Scalene Muscle Group Synergist: Sternocleidomastoid, Longus colli and capitis The splenius captis is located on the lateral side of the C7. This little fleet altho' not quite so respectable as those of Columbus or Capt. Synergist: Sarotious, Action: Abducts and medially rotates thigh a. triceps brachii b. pronator quadratus c. adductor pollicis d. flexor carpi radialis e. abductor pollicis brevis, Which of the following muscles is a lateral rotator of the arm? Middle: Pectoralis minor, serratus anterior G. enmity To explain skeletal muscle movements as activities of agonists (prime movers), antagonists, and synergists. Antagonist: Digastric Synergist: trapezius, Action: hip flexor The sternocleidomastoid muscle (SCM) is an important landmark in the neck which divides it into an anterior and a posterior triangle. This cookie is set by GDPR Cookie Consent plugin. Such cases represent the developmental defect of muscular agenesis and are diagnosed by Ultrasound or Magnetic Resonance Imaging scans. Strap-like; e.g., sternocleidomastoid Or: The function of this muscle is to rotate the head to the opposite side or obliquely rotate the head. Antagonist: Flexor carpi radialis (b) The glenohumeral joint allows for movement in which dimensions? Benign fibrosis, hypoplasia or aplasia of SCM is the most common cause of congenital torticolis. Torticollis gives the appearance of a tilted head on the side involved. [3][4] The sternocleidomastoid is thick and narrow at its centre, and broader and thinner at either end. 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? Bordoni B, Varacallo M. Anatomy, head and neck, sternocleidomastoid muscle. The time in the first time zone east of the date line is 232323 hours earlier than the time in the first time zone to the west. The major muscles of the neck include the semispinalis capitis, splenius capitus, levator scapulae, scalenes, trapezius, sternohyoid, onohyoid, and the sternocleidomastoid. Muscles and nerves MBLEx. antagonist: tibialis anterior, synergist: hamstring muscles, gracilis, gastrocnemius, sartorius Suppose a person travels around the world and lays(8)\overset{\text{(8)}}{{\underline{\text{lays}}}}lays(8) a watch each time he or she enters a new time zone.