Scapula Movements and Muscle Actions Quiz
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Questions and Answers

Which muscle is responsible for adduction, medial rotation, and extension of the GH joint?

  • Triceps brachii
  • Supraspinatus
  • Latissimus dorsi (correct)
  • Infraspinatus

    • Which muscle initiates GH abduction (first 15˚)?

  • Supraspinatus (correct)
  • Subscapularis
  • Infraspinatus
  • Teres minor

    • Which muscle is responsible for medial rotation of the GH joint?

  • Triceps brachii
  • Teres minor
  • Subscapularis (correct)
  • Infraspinatus

    • Which muscle is responsible for scapula protraction, depression, and medial rotation?

    <p>Pectoralis Minor</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, lateral rotation, and keeping the scapula against the thoracic wall?

    <p>Serratus Anterior</p> Signup and view all the answers

    Which muscle is responsible for scapula elevation, lateral rotation, retraction, and depression?

    <p>Trapezius</p> Signup and view all the answers

    Which muscle is responsible for scapula retraction and elevation?

    <p>Rhomboid Major</p> Signup and view all the answers

    Which muscle is responsible for forearm extension at the elbow?

    <p>Triceps brachii (long head)</p> Signup and view all the answers

    Which muscle is a rotator cuff muscle and initiates GH abduction (first 15˚)?

    <p>Supraspinatus</p> Signup and view all the answers

    Which muscle is responsible for lateral rotation of the GH joint?

    <p>Infraspinatus</p> Signup and view all the answers

    Which muscle is responsible for medial rotation of the GH joint?

    <p>Subscapularis</p> Signup and view all the answers

    Which muscle is responsible for adduction, medial rotation, and extension of the GH joint?

    <p>Latissimus dorsi</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, lateral rotation, and keeping the scapula against the thoracic wall?

    <p>Teres minor</p> Signup and view all the answers

    Which muscle is responsible for scapula retraction and elevation?

    <p>Latissimus dorsi</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, depression, and medial rotation?

    <p>Triceps brachii (long head)</p> Signup and view all the answers

    Which muscle is responsible for scapula elevation, lateral rotation, retraction, and depression?

    <p>Latissimus dorsi</p> Signup and view all the answers

    Which muscle is a rotator cuff muscle and responsible for medial rotation of the GH joint?

    <p>Subscapularis</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, depression, and medial rotation?

    <p>Pectoralis Minor</p> Signup and view all the answers

    Which muscle is responsible for scapula retraction and elevation?

    <p>Rhomboid Major</p> Signup and view all the answers

    Which muscle is responsible for medial rotation of the GH joint?

    <p>Biceps Brachii</p> Signup and view all the answers

    Which muscle is responsible for forearm extension at the elbow?

    <p>Biceps Brachii</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, lateral rotation, and keeping the scapula against the thoracic wall?

    <p>Serratus Anterior</p> Signup and view all the answers

    Which muscle is responsible for scapula elevation, lateral rotation, retraction, and depression?

    <p>Trapezius</p> Signup and view all the answers

    Which muscle is responsible for adduction, medial rotation, and extension of the GH joint?

    <p>Pectoralis Major</p> Signup and view all the answers

    Which muscle initiates GH abduction (first 15˚)?

    <p>Deltoid</p> Signup and view all the answers

    Which muscle is a rotator cuff muscle and responsible for medial rotation of the GH joint?

    <p>Biceps Brachii</p> Signup and view all the answers

    Which muscle is a rotator cuff muscle and initiates GH abduction (first 15˚)?

    <p>Deltoid</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, depression, and medial rotation?

    <p>Serratus Anterior</p> Signup and view all the answers

    Which muscle is responsible for scapula protraction, lateral rotation, and keeping the scapula against the thoracic wall?

    <p>Serratus Anterior</p> Signup and view all the answers

    Which muscle is responsible for scapula elevation, lateral rotation, retraction, and depression?

    <p>Trapezius</p> Signup and view all the answers

    Which muscle is responsible for scapula elevation?

    <p>Levator Scapulae</p> Signup and view all the answers

    Which muscle is responsible for scapula retraction and elevation?

    <p>Rhomboid Minor</p> Signup and view all the answers

    Which muscle is responsible for scapula retraction and elevation?

    <p>Rhomboid Major</p> Signup and view all the answers

    Which muscle is responsible for abductor of the GH joint and helps with GH extension?

    <p>Deltoid</p> Signup and view all the answers

    Which muscle is responsible for flexion, adduction, and medial rotation of the GH joint?

    <p>Pectoralis Major</p> Signup and view all the answers

    Which muscle is responsible for flexion of the forearm at the elbow, supination of the forearm, and accessory flexion of the GH joint?

    <p>Biceps Brachii</p> Signup and view all the answers

    Which muscle is responsible for flexion and adduction of the GH joint?

    <p>Coracobrachialis</p> Signup and view all the answers

    What are the boundaries of the cubital fossa?

    <p>The superior boundary is a line between the lateral and medial epicondyles. The lateral boundary is the brachioradialis (medial border of muscle). The medial boundary is the pronator teres (lateral border of muscle). The roof is the bicipital aponeurosis and the floor is the brachialis.</p> Signup and view all the answers

    What are the contents of the cubital fossa?

    <p>The contents of the cubital fossa include the radial nerve, biceps brachii tendon, brachial artery, and median nerve. The median nerve bifurcates into ulnar and radial arteries. The radial nerve is deep to the brachioradialis and divides into deep and superficial branches.</p> Signup and view all the answers

    What are the nerves of the forearm?

    <p>The nerves of the forearm include the radial nerve (C5 to C8, T1), median nerve (C6 to C8, T1), and ulnar nerve (C7, 8, T1).</p> Signup and view all the answers

    What are the arteries of the forearm?

    <p>The arteries of the forearm include the brachial artery, ulnar artery, and radial artery.</p> Signup and view all the answers

    What are the structures in the wrist?

    <p>The structures in the wrist include the radial artery, flexor carpi radialis, ulnar nerve and artery, median nerve, palmaris longus, brachioradialis, and superficial branch of the radial nerve.</p> Signup and view all the answers

    What is the 'snuffbox'?

    <p>The 'snuffbox' is an anatomical landmark located on the dorsum of the wrist. It is formed by the tendons of the extensor pollicis longus, extensor pollicis brevis, and abductor pollicis longus, with the trapezium and scaphoid bones.</p> Signup and view all the answers

    What is the radial nerve's location at the wrist?

    <p>Only the superficial branch of the radial nerve enters the hand. It passes over the tendon of the extensor pollicis longus on the dorsum of the wrist.</p> Signup and view all the answers

    What is the carpal tunnel?

    <p>The carpal tunnel is formed by the flexor retinaculum (ligament) and contains the median nerve, as well as the flexor tendons and extensor tendons.</p> Signup and view all the answers

    What are the muscles in the anterior view of the forearm?

    <p>The muscles in the anterior view of the forearm include the pronator teres, flexor carpi radialis, flexor digitorum superficialis, flexor pollicis longus, and pronator quadratus.</p> Signup and view all the answers

    What is the median nerve's location?

    <p>The median nerve is located in the carpal tunnel and passes between the flexor digitorum superficialis and flexor pollicis longus muscles in the anterior view of the forearm.</p> Signup and view all the answers

    Study Notes

    Muscles and their Functions

    • Adduction, Medial Rotation, and Extension of GH Joint: Pectoralis major or Latissimus dorsi.
    • Initiates GH Abduction (First 15˚): Supraspinatus.
    • Medial Rotation of GH Joint: Subscapularis or Pectoralis major.
    • Scapula Protraction, Depression, and Medial Rotation: Serratus anterior.
    • Scapula Protraction, Lateral Rotation, and Stabilization: Serratus anterior or Pectoralis minor.
    • Scapula Elevation, Lateral Rotation, Retraction, and Depression: Trapezius.
    • Scapula Retraction and Elevation: Rhomboids.
    • Forearm Extension at the Elbow: Triceps brachii.
    • Rotator Cuff Muscle Initiating GH Abduction (First 15˚): Supraspinatus.
    • Lateral Rotation of the GH Joint: Infraspinatus or Teres minor.
    • Medial Rotation of the GH Joint: Subscapularis.
    • Adduction, Medial Rotation, and Extension of GH Joint: Pectoralis major or Latissimus dorsi.

    Scapular Movements

    • Protraction, Lateral Rotation, and Stabilization of Scapula: Serratus anterior.
    • Elevation of Scapula: Upper trapezius.
    • Scapula Elevation, Lateral Rotation, Retraction, and Depression: Trapezius.

    Elbow and Forearm Function

    • Forearm Flexion at Elbow, Supination, and Accessory GH Flexion: Biceps brachii.
    • Flexion and Adduction of GH Joint: Coracobrachialis.

    Cubital Fossa

    • Boundaries of the Cubital Fossa: Lateral border of the brachioradialis, medial border of the pronator teres, and line between the epicondyles of the humerus.
    • Contents of the Cubital Fossa: Biceps brachii tendon, brachial artery, median nerve.

    Forearm Anatomy

    • Nerves of the Forearm: Median nerve, ulnar nerve, radial nerve.
    • Arteries of the Forearm: Radial artery, ulnar artery, brachial artery.

    Wrist Structures

    • Structures in the Wrist: Carpal bones, flexor retinaculum.
    • 'Snuffbox': Anatomical space on the dorsum of the wrist that contains the radial artery and scaphoid bone.
    • Radial Nerve Location at the Wrist: Dorsal aspect, running in the radial groove of the humerus.
    • Carpal Tunnel: Passageway in the wrist through which the median nerve and flexor tendons pass.

    Anterior Forearm and Nerve Locations

    • Muscles in the Anterior View of the Forearm: Flexor carpi radialis, flexor carpi ulnaris, flexor digitorum superficialis, flexor digitorum profundus, and pronator teres.
    • Median Nerve Location: Medially positioned in the forearm, passing through the carpal tunnel to innervate the hand.

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    Description

    Test your knowledge of scapula movements and muscle actions with this informative quiz. Learn about the innervation, origin, and insertion of muscles like the pectoralis minor and serratus anterior. Challenge yourself and improve your understanding of shoulder anatomy.

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