Chapter 7 Study guide
The interphalangeal joints may be actively flexed to a greater degree with the wrist in slight extension as opposed to full flexion.
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Which of the following muscles does not perform wrist extension? A. Extensor indicis B. Extensor pollicis longus C. Extensor digitorum D. Abductor pollicis longus
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Which of the following muscles performs an action in the frontal plane? A. Extensor indicis B. Extensor pollicis longus C. Extensor digitorum D. Abductor pollicis longus
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The muscles that are considered to be the agonists of phalangeal flexion include flexor digitorum superficialis, flexor digitorum profundus, and flexor pollicis longus.
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The only muscle involved in extending all of the metacarpophalangeal and interphalangeal joints of the four fingers is the extensor digitorum.
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The ulnar nerve branching from C8 and T1 provides sensation to the ulnar side of hand, the ulnar one-half of ring finger, and the entire little finger.
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Ulnar flexion is movement of little finger side of hand toward medial aspect or ulnar side of the forearm
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The flexor pollicis longus may be palpated on the posterior surface of the thumb.
F- replace posterior with anterior
Muscles that are considered to be wrist extensors include the extensor carpi radialis longus, extensor carpi radialis brevis, and extensor carpi radialis.
F-replace extensor carpi radialis with extensor carpi ulnaris
The flexor pollicis longus is located lateral with respect to flexor digitorum profundus.
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All of the wrist and hand muscles are innervated from the radial and median nerves of the brachial plexus.
F- and ulnar nerves
The median nerve and all of the flexor tendons except for the flexor carpi ulnaris pass through the carpal tunnel.
F- flexor carpi ulnaris & palmaris longus
There are eleven muscles that are considered to be "intrinsic" to the hand.
F- replace 11 with 18
The flexor digitorum superficialis performs its action in the frontal plane.
F- replace frontal with sagittal
Hitting the funny bone is actually a contusion to the humeral nerve.
F- replace humeral with ulnar
Radial flexion is movement of the thumb side of hand toward medial aspect or radial side of forearm.
F- replace medial with lateral
"Carpal Tunnel Syndrome" is swelling and inflammation from increased pressure in carpal tunnel that results in decreased function of the median nerve.
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All of the wrist flexor muscles generally have their origins located on the anteromedial aspect of the proximal forearm and the medial epicondyle of humerus.
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Each finger has three interphalangeal joints while the thumb is has only two.
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Motions of the finger metacarpophalangeal joints include flexion, extension, abduction, and adduction.
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Motions of the wrist joint include flexion, extension, abduction and adduction
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Muscles that are considered to be wrist flexors include the flexor carpi radialis, flexor carpi ulnaris, and palmaris longus.
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Normally, the wrist has more adduction range of motion than abduction range of motion.
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Opposition is movement of the thumb across palmar aspect to oppose any or all of the phalanges.
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The extensor carpi ulnaris and flexor carpi ulnaris are the prime movers in ulnar deviation.
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The extensor digiti minimi is innervated by the radial nerve (C6, 7, 8).
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The wrist joint moves through the _____ plane about the _____ axis with ulnar and deviation. A. transverse; longitudinal B. frontal; sagittal C. sagittal; coronal D. frontal; frontal
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The 3rd metacarpophalangeal joint moves in which of the following planes? A. Frontal, sagittal B. Transverse, longitudinal C. Sagittal, transverse D. Frontal, transverse
???????????A. Frontal, sagittal
Proximal interphalangeal joint motion occurs about the _____ axis. A. transverse B. longitudinal C. sagittal D. frontal
??????????C. sagittal
The extensor carpi radialis longus muscle can perform weak extension of the elbow when contracting concentrically.
????????F-replace radialis longs with ulnaris
Which of the following is the insertion of the extensor carpi ulnaris? A. Base of 5th metacarpal B. Base of distal phalanges C. Base of 3rd metacarpal D. Base of 2nd metacarpal
A. Base of 5th metacarpal
Which of the following muscles performs extension of the index finger? A. Extensor indicis B. Extensor pollicis longus C. Extensor digiti minimi D. Abductor pollicis longus
A. Extensor indicis
Which of the following statements is not true regarding the wrist and hand joints? A. Forms 16 phalanges B. Composed of 29 bones C. Contain more than 25 joints D. Composed of more than 30 muscles
A. Forms 16 phalanges * should be 14
Which of the following muscles performs flexion of the thumb? A. Palmaris longus B. Flexor carpi ulnaris C. Flexor pollicis longus D. Extensor carpi radialis longus
A. Palmaris longus
Which of the following is the origin of the flexor digitorum profundus? A. Proximal 3/4ths of the anterior and medial ulna B. Middle anterior surface of the radius C. Posterior aspect of the proximal ulna D. Medial epicondyle of the humerus
A. Proximal 3/4ths of the anterior and medial ulna
Which of the following is the insertion of the flexor digitorum profundus? A. Base of 5th metacarpal B. Base of distal phalanxes of the four fingers C. Base of 3rd metacarpal D. Base of 2nd metacarpal
B. Base of distal phalanxes of the four fingers
Which of the following muscles performs adduction of the wrist? A. Palmaris longus B. Flexor carpi ulnaris C. Flexor pollicis longus D. Extensor carpi radialis longus
B. Flexor carpi ulnaris
Which of the following is the origin of the flexor pollicis longus? A. Proximal 3/4ths of the anterior and medial ulna B. Middle anterior surface of the radius C. Posterior aspect of the proximal ulna D. Medial epicondyle of the humerus
B. Middle anterior surface of the radius
Which of the following is the insertion of the extensor carpi radialis brevis? A. Base of 5th metacarpal B. Base of distal phalanges C. Base of 3rd metacarpal D. Base of 2nd metacarpal
C. Base of 3rd metacarpal
Which of the following muscles has its insertion on the four tendons to the bases of middle and distal phalanxes of the four fingers on the dorsal surface of the hand? A. Extensor indicis B. Extensor pollicis longus C. Extensor digitorum D. Abductor pollicis longus
C. Extensor digitorum
Which of the following muscles has its origin on the lateral epicondyle of the humerus? A. Extensor indicis B. Extensor pollicis longus C. Extensor digitorum D. Abductor pollicis longus
C. Extensor digitorum
Which of the following muscles may not be palpated on the dorsal aspect of the hand? A. Extensor indicis B. Extensor pollicis longus C. Extensor digitorum D. Abductor pollicis longus
D. Abductor pollicis longus
Which of the following muscles performs abduction of the thumb? A. Extensor indicis B. Extensor pollicis longus C. Extensor digitorum D. Abductor pollicis longus
D. Abductor pollicis longus
Which of the following is the insertion of the extensor carpi radialis longus? A. Base of 5th metacarpal B. Base of distal phalanges C. Base of 3rd metacarpal D. Base of 2nd metacarpal
D. Base of 2nd metacarpal
Which of the following muscles performs abduction of the wrist? A. Palmaris longus B. Flexor carpi ulnaris C. Extensor digitorum D. Extensor carpi radialis longus
D. Extensor carpi radialis longus
Which of these muscles may be palpated just proximal to the dorsal aspect of the wrist? A. Palmaris longus B. Flexor carpi ulnaris C. Flexor pollicis longus D. Extensor carpi radialis longus
D. Extensor carpi radialis longus
Which of the following is the origin of the flexor carpi radialis? A. Proximal 3/4ths of the anterior and medial ulna B. Middle anterior surface of the radius C. Posterior aspect of the proximal ulna D. Medial epicondyle of the humerus
D. Medial epicondyle of the humerus
Which of the following is the origin of the palmaris longus? A. Proximal 3/4ths of the anterior and medial ulna B. Middle anterior surface of the radius C. Posterior aspect of the proximal ulna D. Medial epicondyle of the humerus
D. Medial epicondyle of the humerus