Term
| Name the carpal bones starting at the lateral side of each row. |
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Definition
| Proximal—scaphoid, lunate, triquetrium, pisiform; Distal—trapezium, trapezoid, capitate, hamate |
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Term
| Fracture of what carpal bone results in tenderness and pain in the anatomical snuffbox? |
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Definition
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Term
| At what joints do pronation and supination occur? |
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Definition
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Term
| Name the muscles on the thenar eminence. What nerve innervates these muscles? |
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Definition
| The 3 muscles in the thenar eminence are the abductor pollicis brevis, flexor pollicis brevis, and opponens pollicis These muscles are innervated by the recurrent branch of the median nerve |
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Term
| Which tendons of the flexor forearm muscles attach to the middle phalanges of the non-thumb digits? |
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Definition
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Term
| Which artery gives rise to the superficial palmar arch?…to the deep palmar arch? |
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Definition
| ulnar artery; radial palmar arch |
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Term
| What structure is affected in the condition known as Dupuytren’s contracture? |
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Definition
| palmar fascia and aponeurosis |
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Term
Name the muscle(s) that are primarily responsible for each of the following actions:
a. Opposition of the thumb
b. Abduction of non-thumb digits
c. Adduction of non-thumb digits
d. Flexion of MP joints
e. Extension of IP joints
f. Flexion of DIP joints
g. Flexion of PIP joints
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Definition
A. opponens pollicis
B. dorsal interossei
C. palmar interossei
D. lumbricals
E. lumbricals and interossei
F. flexor digitorum profundus
G. flexor digitorum superficialis |
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Term
| What nerve innervates the majority of the intrinsic muscle of the hand? What intrinsic muscles does it not innervate? |
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Definition
| The ulnar nerve provides motor innervations to the majority of the intrinsic hand muscles EXCEPT for the thenar muscles (APB, FPB, opponens pollicis) and lumbricals 1 & 2. |
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Term
| What nerve supplies cutaneous sensation to the tip of the thumb?…to the tip of the middle finger?…to the tip of the little finger? |
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Definition
| The median nerve supplies cutaneous innervations to the tips of the thumb and the middle finger. The ulnar nerve supplies cutaneous innervations to the tip of the little finger. |
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Term
Name the nerve that is injured in each of the following conditions:
a. Wrist drop
b. Claw hand
c. Hand of benediction
d. Ape hand
e. Carpal tunnel syndrome
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Definition
Name the nerve that is injured in each of the following conditions:
a. Wrist drop –radial nerve
b. Claw hand –ulnar nerve
c. Hand of benediction –median nerve
d. Ape hand –median nerve
e. Carpal tunnel syndrome –median nerve
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Term
| What nerve does not supply any intrinsic hand muscles? What area does it supply in the hand? |
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Definition
| The radial nerve DOES NOT provide motor innervations to any intrinsic hand muscles; it supplies sensory innervation to the dorsolateral side of the hand. |
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Term
| What type of injury is often called a “shoulder separation”? |
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Definition
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Term
| What ligament surrounds the head of the radius? |
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Definition
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Term
| What condition results in inflammation of the synovial sheaths, which enclose the tendons of the forearm muscles traveling over the phalanges? |
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Definition
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Term
| Excessive extension and lateral rotation of the humerus results in the dislocation of what joint? |
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Definition
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Term
| What nerve may be damaged with the injury in question #16? (Question 16- Excessive extension and lateral rotation of the humerus results in the dislocation of what joint?) |
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Definition
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Term
| If a patient is cannot flex the DIP joint of a digit held in the extended position, what muscle tendon is damaged? |
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Definition
| flexor digitorum profundus |
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Term
| Inability to oppose the thumb is due to injury to what nerve? What muscle is damaged? |
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Definition
| recurrent branch of the median nerve; opponens pollicis |
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Term
| Damage to the ulnar nerve weakened adduction of the non-thumb digits. What muscles were affected? |
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Definition
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