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Anatomy Test 1- Hand and Joints of UE
Upper extremity
20
Anatomy
Professional
09/21/2011

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Cards

Term
Name the carpal bones starting at the lateral side of each row.
Definition
Proximal row- scaphoid, lunate, triquetrum, pisiform

Distal row: trapezium , trapezoid, capitate, hamate
Term
Fracture of what carpal bone results in tenderness and pain in the anatomical snuffbox?
Definition
Scaphoid
Term
At what joints do pronation and supination occur?
Definition
Proximal radioulnar joint
Term
Name the muscles on the thenar eminence. What nerve innervates these muscles?
Definition
Fleshy part at the base of the thumb
Opponens pollicis
Flexr pollicis brevis
Innervated by MEDIAN NERVE
Term
Which tendons of the flexor forearm muscles attach to the middle phalanges of the non-thumb digits?
Definition
Flexor digitorum superficialis
Term
Which artery gives rise to the superficial palmar arch?... to the deep palmar arch?
Definition
Superficial-ulnar artery
Deep- radial artery
Term
What structure is affected in the condition known as Dupuytren's contracture?
Definition
Palmar fascia and aponeurosis
Term
Name the muscle(s) that are primarily responsible for each of the following actions:
1) Opposition of the thumb
2)Abduction of non-thumb digits
3)Adduction of the non-thumb digits
4)Flexion of MP joints
5)Extension of IP joints
6)Flexion of DIP joints
7) Flexion of PIP joints
Definition
1) Opposition of the thumb:
- opponens pollicis
2)ABduction of non-thumb digits
-dorsal interossei
3)ADduction of non-thumb digits
-Palmar interossei
4)Flexion of MP joints
-lumbricals
5)Extension of IP joints
-when lumbricals and interossei work together
-May assist due to attachment to extensor expansion - ext digitorum, ext digiti minimi, ext indicis
6) Flexion of DIP joints
-flexor digitorum profundus
7) Flexion of PIP joints
-Flexor digitorum superficialis
Term
What nerve innervates the majority of the intrinsic muscle of the hand? What intrinsic muscles do it not innervate?
Definition
Ulnar nerve; Median nerve - thenar muscles , lateral 2 lumbricals (thumb side)
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?
Definition
Thumb= median
Middle=median
Little= ulnar
Term
Name the nerve that is injured in each of the following conditions:
Wrist drop
Claw hand
Hand of benediction
Ape hand
Carpal tunnel
Definition
Wrist drop- radial
Claw hand- long standing ulnar nerve injury
Hand of benediction- high median nerve injury
Ape hand- distal median nerve injury
Carpal tunnel syndrome- median
Term
What nerve does not supply any intrinsic hand muscles? What area does it supply in the hand?
Definition
Radial nerve; Sensory innervation of posterior , lateral hand
Term
What type of injury is often called "shoulder separation"?
Definition
AC joint sprain
Term
What ligament surrounds the head of radius?
Definition
Annular ligament
Term
What condition results in inflammation of the synovial sheaths, which enclose the tendons of the forearm muscles traveling over the phalanges?
Definition
Tenosynovitis
Term
Excessive extension and lateral rotation of the humerus results in the dislocation of what joint?
Definition
Glenohumeral joint
Term
What nerve may be damaged with the injury to the glenohumeral joint (previous question)?
Definition
Axillary nerve
Term
If a patient cannot flex the DIP joint of a digit held in the extended position , what muscle tendon is damaged?
Definition
Flexor digitorum profundus
Term
Inability to oppose the thumb is due to what nerve? What muscle is damaged?
Definition
Median nerve; opponens pollicis
Term
Damage to the ulnar nerve weakened adduction of the non-thumb digits. What muscles were affected?
Definition
Palmar interossei
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