Posted by clp on November 01, 2017 at 20:41:40:
In Reply to: Palm of Hand - True/False posted by lae2 on November 01, 2017 at 08:04:10:
: Palm of Hand - True/False
1. Cutaneous nerves that supply the volar surface of the fingers also supply the dorsal surfaces at the nail beds.
2. The cutaneous nerve distribution to the palm of the hand is, in part, supplied by two named branches of the median nerve.
a. False: by median and ulnar nerve
3. In anatomical position the volar surface of the thumb is in the same plane as the volar surfaces of the fingers.
a. False: thumb is slightly pronated
4. Lesion of the recurrent median nerve results in an uncompensated loss of opposition.
5. The pisiform bone, a sesamoid bone, rests on the anterior surface of the trapezoid bone.
a. False: triquetrum
6. The metacarpal phalangeal joints are condyloid joints and the interphalangeal joints are hinge joints.
7. The interossei pass dorsal to the deep transverse ligament and the lumbricals pass anterior.
8. The lumbricals and the interossei are flexors at the metacarpophalangeal joint and extensors at the interphalangeal joints.
9. Damage to the ulnar nerve in the cubital tunnel causes less of a claw hand deformity than does damage at Guyon's canal.
10. Damage to the recurrent median nerve causes the resting position of the thumb to be supinated and this deformity is known as ape hand.
11. The deep palmar arch passes posterior, and the superficial palmar arch passes anterior, to the oblique head of the adductor pollicis.
12. The surface projection of the superficial palmar arch is proximal to the surface projection of the deep palmar arch.
a. False: superficial arch is more distal in comparison to the deep arch
13. The ulnar two lumbricals are unipennate and innervated by the median nerve and the radial two lumbricals are bipennate and innervated by the ulnar nerve.
a. False: the ulnar 2 are bipennate and supplied by ulnar nerve while the radial 2 are unipennate and supplied by median
14. Intertendinous slips do not attach to extensor indicis.
15. The tendons of flexor digitorum profundus are posterior to the tendons of flexor digitorum superficialis as these tendons travel in the digital tendon sheaths.
16. The tendons of flexor digitorum superficialis split proximal to attaching to the base of the distal phalanx.
a. False: split proximal to attach at the base of the middle phalanx
17. Abductor digiti minimi shares and origin with an insertion of flexor carpi ulnaris.
a. True (pisiform)
18. Communicating arteries provide anastomoses between the plantar and dorsal metacarpal arteries.
19. Terminal branches of the radial artery are the princeps pollicis artery and the deep palmar arch.
20. The natatory ligament is more closely associated with stabilizing the palmar skin and the deep transverse metacarpal ligament is more closely associated with stabilizing bone.
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