Hand Anatomy and Nerve Injuries
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Questions and Answers

What is the primary action of the flexor pollicis longus muscle?

  • Extension of the thumb
  • Abduction of the hand
  • Flexion of the terminal phalanx (correct)
  • Flexion of the wrist
  • Which nerve is responsible for wrist extension?

  • Median nerve
  • Axillary nerve
  • Ulnar nerve
  • Radial nerve (correct)
  • What is the characteristic deformity seen in Radial nerve palsy?

  • Winged scapula
  • Drooping shoulder
  • Waiter's tip deformity
  • Claw-like deformity (correct)
  • Which nerve arises from the roots of the brachial plexus in the neck and supplies the serratus anterior muscle?

    <p>Long thoracic nerve</p> Signup and view all the answers

    What is the primary supplier of the triceps muscle?

    <p>Radial nerve</p> Signup and view all the answers

    What is the name of the palsy caused by traction injury or stretch injury in the axillary area?

    <p>Klumpke's palsy</p> Signup and view all the answers

    What is the name of the artery that sends oxygenated blood from the heart to the organs?

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

    What is the branch of the aortic arch that gives rise to the right common carotid and right subclavian arteries?

    <p>Brachiocephalic Artery</p> Signup and view all the answers

    Which artery is the main trunk that supplies blood to the upper extremities?

    <p>Subclavian Artery</p> Signup and view all the answers

    What is the name of the artery that runs deep to the brachioradialis muscle in the forearm?

    <p>Radial Artery</p> Signup and view all the answers

    Which artery is the smaller of the two terminal branches of the brachial artery?

    <p>Radial Artery</p> Signup and view all the answers

    What is the name of the branch of the radial artery that takes part in the arterial anastomosis around the elbow joint?

    <p>Radial Recurrent Artery</p> Signup and view all the answers

    Which artery is the larger of the two terminal branches of the brachial artery?

    <p>Ulnar Artery</p> Signup and view all the answers

    What is the name of the artery that lies superficial to the flexor retinaculum on the lateral side of the ulnar nerve and pisiform bone?

    <p>Ulnar Artery</p> Signup and view all the answers

    What is the name of the branch of the ulnar artery that arises just proximal to the wrist and joins the radial artery to complete the superficial palmar arch?

    <p>Superficial Palmar Branch</p> Signup and view all the answers

    What is the name of the depression found on the lateral aspect of the dorsum of the hand where the radial pulse can be palpated?

    <p>Anatomic Snuffbox</p> Signup and view all the answers

    What is the origin of the entire brachial plexus?

    <p>C5, C6, C7, C8, and T1 nerves</p> Signup and view all the answers

    Which nerve is responsible for supplying the shoulder region?

    <p>Axillary nerve</p> Signup and view all the answers

    What is the first muscle innervated by the musculocutaneous nerve?

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

    Which nerve is responsible for supplying the lateral side of the forearm?

    <p>Musculocutaneous nerve</p> Signup and view all the answers

    What is the name of the condition characterized by impingement of the median nerve in the wrist?

    <p>Carpal tunnel syndrome</p> Signup and view all the answers

    Which nerve is responsible for supplying the medial side of the forearm?

    <p>Ulnar nerve</p> Signup and view all the answers

    What is the name of the sign characterized by adducting the thumb being impossible?

    <p>Froment's Sign</p> Signup and view all the answers

    What is the name of the nerve that gives off branches after the shoulder joint?

    <p>Axillary nerve</p> Signup and view all the answers

    Which cord is formed when the anterior divisions of the upper and middle trunks unite?

    <p>Lateral cord</p> Signup and view all the answers

    Which nerve is responsible for supplying the wrist flexor muscles in the volar surface of the arm?

    <p>Median nerve</p> Signup and view all the answers

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