Deck 9: Intrinsic Muscles of the Finger Joints

Question 1

Which are the attachments of the lumbricals manus?

A)metacarpal of fingers one through five to the proximal phalanx of fingers two,three,and four,on the side away from the center of the middle finger
B)distal tendons of the flexor digitorum profundus to the distal tendons of the extensor digitorum (the dorsal digital expansion)
C)metacarpal of fingers two,four,and five to the proximal phalanx of fingers two,four,and five on the "middle finger side"
D)Third metacarpal to the thumb

Answer 1

B

Question 2

Which are the attachments of the flexor digiti minimi manus?

A)flexor retinaculum and the hamate to the metacarpal of the little finger (finger number five)
B)hamate to the proximal phalanx of the little finger (finger number five)
C)flexor retinaculum and the hamate to the proximal phalanx of the little finger (finger number five)
D)hamate to the distal phalanx of the little finger (finger number five)

Answer 2

C

Question 3

Which muscle attaches distally onto the "middle finger side" of phalanges?

A)adductor pollicis
B)lumbricals manus
C)palmar interossei
D)dorsal interossei manus

Answer 3

C

Question 4

Which are the attachments of the abductor digiti minimi manus?

A)flexor retinaculum and the pisiform to the metacarpal of the little finger (finger number five)
B)pisiform to the proximal phalanx of the little finger (finger number five)
C)flexor retinaculum and the pisiform to the proximal phalanx of the little finger (finger number five)
D)pisiform to the distal phalanx of the little finger (finger number five)

Question 5

Which muscle attaches distally onto phalanges on the side away from the center of the "middle finger side"?

A)adductor pollicis
B)lumbricals manus
C)palmar interossei
D)dorsal interossei manus

Question 6

Which muscle(s)attaches onto carpal bones?

A)abductor pollicis brevis
B)flexor pollicis brevis
C)opponens pollicis
D)all of the above

Question 7

Which are the attachments of the opponens pollicis?

A)flexor retinaculum and the trapezium to the metacarpal of the thumb
B)flexor retinaculum and the trapezium to the proximal phalanx of the thumb
C)extensor retinaculum and the trapezium to the distal phalanx of the thumb
D)extensor retinaculum and the trapezium to the proximal phalanx of the thumb

Question 8

Which are the attachments of the palmar interossei?

A)metacarpal of fingers one through five to the proximal phalanx of fingers two,three,and four,on the side away from the center of the middle finger
B)distal tendons of the flexor digitorum profundus to the distal tendons of the extensor digitorum (the dorsal digital expansion)
C)metacarpal of fingers two,four,and five to the proximal phalanx of fingers two,four,and five on the "middle finger side"
D)Third metacarpal to the thumb

Question 9

Which muscle(s)attaches onto carpal bones?

A)abductor digiti minimi manus
B)flexor digiti minimi manus
C)opponens digiti minimi
D)all of the above

Question 10

Which muscle(s)attaches onto the proximal phalanx of the thumb?

A)abductor pollicis brevis
B)flexor pollicis brevis
C)opponens pollicis
D)a and b

Question 11

Which are the attachments of the adductor pollicis?

A)metacarpal of fingers one through five to the proximal phalanx of fingers two,three,and four,on the side away from the center of the middle finger
B)distal tendons of the flexor digitorum profundus to the distal tendons of the extensor digitorum (the dorsal digital expansion)
C)metacarpal of fingers two,four,and five to the proximal phalanx of fingers two,four,and five on the "middle finger side"
D)Third metacarpal to the thumb

Question 12

Which are the attachments of the opponens digiti minimi?

A)flexor retinaculum and the hamate to the metacarpal of the little finger (finger number five)
B)hamate to the proximal phalanx of the little finger (finger number five)
C)flexor retinaculum and the hamate to the proximal phalanx of the little finger (finger number five)
D)hamate to the distal phalanx of the little finger (finger number five)

Question 13

Which muscle(s)attaches onto the metacarpal of the little finger (finger number five)?

A)abductor digiti minimi manus
B)flexor digiti minimi manus
C)opponens digiti minimi
D)a and b

Question 14

Which muscle attaches onto the metacarpal of the thumb?

A)abductor pollicis brevis
B)flexor pollicis brevis
C)opponens pollicis
D)abductor digiti minimi manus

Question 15

Which are the attachments of the abductor pollicis brevis?

A)flexor retinaculum,scaphoid,and trapezium to the metacarpal of the thumb
B)flexor retinaculum,scaphoid,and trapezium to the proximal phalanx of the thumb
C)flexor retinaculum,scaphoid,and trapezium to the distal phalanx of the thumb
D)extensor retinaculum,scaphoid,and trapezium to the proximal phalanx of the thumb

Question 16

Which muscle(s)attaches onto the proximal phalanx of the little finger (finger number five)?

A)abductor digiti minimi manus
B)flexor digiti minimi manus
C)opponens digiti minimi
D)a and b

Question 17

Which muscle(s)attaches into the flexor retinaculum?

A)abductor pollicis brevis
B)flexor pollicis brevis
C)opponens pollicis
D)all of the above

Question 18

Which are the attachments of the dorsal interossei manus?

A)metacarpal of fingers one through five to the proximal phalanx of fingers two,three,and four,on the side away from the center of the middle finger
B)distal tendons of the flexor digitorum profundus to the distal tendons of the extensor digitorum (the dorsal digital expansion)
C)metacarpal of fingers two,four,and five to the proximal phalanx of fingers two,four,and five on the "middle finger side"
D)Third metacarpal to the thumb

Question 19

Which are the attachments of the flexor pollicis brevis?

A)flexor retinaculum and the trapezium to the metacarpal of the thumb
B)flexor retinaculum and the trapezium to the proximal phalanx of the thumb
C)flexor retinaculum and the trapezium to the distal phalanx of the thumb
D)extensor retinaculum and the trapezium to the proximal phalanx of the thumb

Question 20

Which are the attachments of the palmaris brevis?

A)medial epicondyle of the humerus (via the common flexor tendon)to the palm of the hand
B)flexor retinaculum and the palmar aponeurosis to the dermis of the ulnar (medial)border of the hand
C)flexor retinaculum and the palmar aponeurosis to the dermis of the radial (lateral)border of the hand
D)lateral epicondyle of the humerus (via the common extensor tendon)to the palm of the hand

Question 21

Which is an action of the abductor digiti minimi manus of the little finger (finger number five)at the metacarpophalangeal joint?

A)abduction
B)flexion
C)adduction
D)medial rotation

Question 22

Which is an action of the lumbricals manus?

A)flexion of fingers two through five at the interphalangeal joints
B)extension of fingers two through five at the interphalangeal joints
C)adduction of fingers two through five at the metacarpophalangeal joint
D)extension of the hand at the wrist joint

Question 23

Which is an action of the dorsal interossei manus at the metacarpophalangeal joint?

A)adduction of fingers two,three,and four
B)abduction of fingers two,three,and four
C)medial rotation of fingers two,three,and four
D)abduction of fingers three,four,and five

Question 24

Which is an action of the opponens pollicis?

A)lateral rotation of the thumb at the carpometacarpal joint
B)extension of the thumb at the interphalangeal joint
C)extension of the thumb at the carpometacarpal joint
D)opposition of the thumb at the carpometacarpal joint

Question 25

If a muscle crosses the metacarpophalangeal and/or interphalangeal joints of the fingers posteriorly,what will its action be of the fingers?

A)flexion
B)extension
C)abduction
D)adduction

Question 26

Which is true?

A)all three thenar muscles move the little finger (finger number five)
B)all three thenar muscles move the thumb
C)all three thenar muscles move fingers two through five
D)none of the above

Question 27

Which is an action of the palmaris brevis?

A)flexion of the hand at the wrist joint
B)flexion of the thumb at the carpometacarpal joint
C)wrinkles the skin of the palm
D)extension of the fingers at the metacarpophalangeal joint

Question 28

Which is an action of the lumbricals manus?

A)flexion of fingers two through five at the metacarpophalangeal joint
B)flexion of the hand at the wrist joint
C)extension of the hand at the wrist joint
D)abduction of fingers two through five at the metacarpophalangeal joint

Question 29

If a muscle crosses the metacarpophalangeal joint of a finger on the side away from the middle finger,what will its action be of the finger?

A)flexion
B)extension
C)abduction
D)adduction

Question 30

Which is an action of the opponens digiti minimi?

A)opposition of the little finger (finger number five)at the carpometacarpal joint
B)flexion of the hand at the wrist joint
C)extension of the little finger (finger number five)at the metacarpophalangeal joint
D)medial rotation of the thumb at the carpometacarpal joint

Question 31

If a muscle crosses the metacarpophalangeal joint of a finger on the side toward the middle finger,what will its action be of the finger?

A)flexion
B)extension
C)abduction
D)adduction

Question 32

Which is an action of the abductor digiti minimi manus of the little finger (finger number five)at the metacarpophalangeal joint?

A)adduction
B)flexion
C)extension
D)all of the above

Question 33

Which is an action of the adductor pollicis?

A)abduction of the thumb at the carpometacarpal joint
B)adduction of the thumb at the carpometacarpal joint
C)flexion of the hand at the wrist joint
D)lateral rotation of the thumb at the carpometacarpal joint

Question 34

Which is true?

A)all three hypothenar muscles move the little finger (finger number five)
B)all three hypothenar muscles move the thumb
C)all three hypothenar muscles move fingers two through five
D)none of the above

Question 35

Which is (are)actions of the lumbricals manus?

A)flexion of fingers two through five at the metacarpophalangeal joint
B)extension of fingers two through five at the interphalangeal joints
C)a and b
D)none of the above

Question 36

If a muscle crosses the metacarpophalangeal and/or interphalangeal joints of the fingers anteriorly,what will its action be of the fingers?

A)flexion
B)extension
C)abduction
D)adduction

Question 37

Which is an action of the flexor pollicis brevis?

A)adduction of the thumb at the carpometacarpal joint
B)flexion of the thumb at the carpometacarpal joint
C)lateral rotation of the thumb at the carpometacarpal joint
D)flexion of the index finger (finger number two)at the carpometacarpal joint

Question 38

If a muscle crosses the metacarpophalangeal and/or interphalangeal joints of the fingers anteriorly,what will its action be of the fingers?

A)flexion
B)extension
C)abduction
D)adduction

Question 39

Which is an action of the abductor pollicis brevis?

A)medial rotation of the thumb at the carpometacarpal joint
B)abduction of the thumb at the carpometacarpal joint
C)lateral rotation of the thumb at the carpometacarpal joint
D)flexion of the index finger (finger number two)at the carpometacarpal joint

Question 40

Which is an action of the palmar interossei?

A)adduction of fingers two,four,and five at the metacarpophalangeal joint
B)abduction of fingers two,four,and five at the metacarpophalangeal joint
C)flexion of the hand at the wrist joint
D)adduction of fingers two through five at the metacarpophalangeal joint

Question 41

If a muscle crosses the metacarpophalangeal and/or interphalangeal joints of the fingers anteriorly,what will its eccentric function of the fingers be?

A)restrains/slows flexion
B)restrains/slows extension
C)restrains/slows abduction
D)restrains/slows adduction

Question 42

Which are actions of the opponens pollicis of the thumb at the carpometacarpal joint?

A)extension,abduction,and medial rotation
B)flexion,medial rotation,and abduction
C)flexion,adduction,and lateral rotation
D)flexion,adduction,and medial rotation

Question 43

What nerve(s)innervates the flexor pollicis brevis?

A)median
B)ulnar
C)radial
D)a and b

Question 44

Which is an eccentric function of the palmar interossei?

A)restrains/slows adduction of fingers two,four,and five at the metacarpophalangeal joint
B)restrains/slows abduction of fingers two,four,and five at the metacarpophalangeal joint
C)restrains/slows flexion of the hand at the wrist joint
D)restrains/slows flexion of fingers two,four,and five at the metacarpophalangeal joint

Question 45

Which is an eccentric function of the abductor digiti minimi manus of the little finger (finger number five)at the metacarpophalangeal joint?

A)restrains/slows abduction
B)restrains/slows extension
C)restrains/slows adduction
D)restrains/slows extension

Question 46

What nerve(s)innervates the abductor digiti minimi manus?

A)median
B)ulnar
C)radial
D)a and b

Question 47

Which are actions of the opponens digiti minimi of the little finger (finger number five)at the carpometacarpal joint?

A)extension,adduction,and medial rotation
B)flexion,adduction,and medial rotation
C)flexion,adduction,and lateral rotation
D)flexion,abduction,and medial rotation

Question 48

If a muscle crosses the metacarpophalangeal and/or interphalangeal joints of the fingers posteriorly,what will its eccentric function of the fingers be?

A)restrains/slows flexion
B)restrains/slows extension
C)restrains/slows abduction
D)restrains/slows adduction

Question 49

What nerve(s)innervates the opponens pollicis?

A)median
B)ulnar
C)radial
D)a and b

Question 50

What nerve(s)innervates the flexor digiti minimi manus?

A)median
B)ulnar
C)radial
D)a and b

Question 51

Which is an eccentric function of the dorsal interossei manus?

A)restrains/slows adduction of fingers two,three,and four at the metacarpophalangeal joint
B)restrains/slows abduction of fingers two,three,and four at the metacarpophalangeal joint
C)restrains/slows medial rotation of fingers two,three,and four at the metacarpophalangeal joint
D)restrains/slows flexion of the hand at the wrist joint

Question 52

What nerve(s)innervates the abductor pollicis brevis?

A)median
B)ulnar
C)radial
D)a and b

Question 53

If a muscle crosses the metacarpophalangeal joint of a finger on the side away from the middle finger,what will its eccentric function of the finger be?

A)restrains/slows flexion
B)restrains/slows extension
C)restrains/slows abduction
D)restrains/slows adduction

Question 54

Which is an eccentric function of the abductor pollicis brevis?

A)restrains/slows lateral rotation of the thumb at the carpometacarpal joint
B)restrains/slows adduction of the thumb at the carpometacarpal joint
C)restrains/slows extension of the thumb at the carpometacarpal joint
D)restrains/slows flexion of the index finger (finger number two)at the carpometacarpal joint

Question 55

Which is an eccentric function of the adductor pollicis?

A)restrains/slows abduction of the thumb at the carpometacarpal joint
B)restrains/slows adduction of the thumb at the carpometacarpal joint
C)restrains/slows flexion of the hand at the wrist joint
D)restrains/slows medial rotation of the thumb at the carpometacarpal joint

Question 56

Which is an eccentric function of the lumbricals manus?

A)restrains/slows flexion of fingers two through five at the metacarpophalangeal joint
B)restrains/slows extension of fingers two through five at the metacarpophalangeal joint
C)restrains/slows extension of the hand at the wrist joint
D)restrains/slows abduction of fingers two through five at the metacarpophalangeal joint

Question 57

Which is an eccentric function of the flexor pollicis brevis?

A)restrains/slows medial rotation of the thumb at the carpometacarpal joint
B)restrains/slows flexion of the thumb at the carpometacarpal joint
C)restrains/slows extension of the thumb at the carpometacarpal joint
D)restrains/slows flexion of the index finger (finger number two)at the carpometacarpal joint

Question 58

Which is an eccentric function of the opponens digiti minimi?

A)restrains/slows opposition of the little finger (finger number five)at the carpometacarpal joint
B)restrains/slows flexion of the hand at the wrist joint
C)restrains/slows reposition of the little finger (finger number five)at the carpometacarpal joint
D)restrains/slows medial rotation of the thumb at the carpometacarpal joint

Question 59

If a muscle crosses the metacarpophalangeal joint of a finger on the side toward the middle finger,what will its eccentric function of the finger be?

A)restrains/slows flexion
B)restrains/slows extension
C)restrains/slows abduction
D)restrains/slows adduction

Question 60

Which is an eccentric function of the opponens pollicis?

A)restrains/slows medial rotation of the thumb at the carpometacarpal joint
B)restrains/slows flexion of the thumb at the interphalangeal joint
C)restrains/slows reposition of the thumb at the carpometacarpal joint
D)restrains/slows opposition of the thumb at the carpometacarpal joint

Question 61

Which nerves provide innervation to the muscles of the thenar eminence of the hand?

A)median and radial
B)ulnar and axillary
C)median and ulnar
D)musculocutaneous and radial

Question 62

What nerve(s)innervates the palmaris brevis?

A)median
B)ulnar
C)radial
D)a and b

Question 63

What nerve(s)innervates the opponens digiti minimi?

A)median
B)ulnar
C)radial
D)a and b

Question 64

What are the three intrinsic hand muscles of the thenar eminence?

A)abductor digiti minimi manus,flexor digiti minimi manus,and opponens digiti minimi
B)abductor pollicis brevis,flexor pollicis brevis,and opponens pollicis
C)adductor pollicis,lumbricals manus,palmar interossei,and dorsal interossei manus
D)abductor digiti minimi pedis,flexor digiti minimi pedis,and opponens digiti minimi

Question 65

Which hypothenar eminence muscle is the most superficial of the three?

A)abductor pollicis brevis
B)abductor digiti minimi manus
C)flexor digiti minimi manus
D)opponens digiti minimi

Question 66

What are the intrinsic hand muscles of the central compartment?

A)abductor digiti minimi manus,flexor digiti minimi manus,and opponens digiti minimi
B)abductor pollicis brevis,flexor pollicis brevis,and opponens pollicis
C)adductor pollicis,lumbricals manus,palmar interossei,and dorsal interossei manus
D)abductor digiti minimi pedis,flexor digiti minimi pedis,and opponens digiti minimi

Question 67

What nerve(s)innervates the dorsal interossei manus?

A)median
B)ulnar
C)radial
D)a and b

Question 68

What nerve(s)innervates the adductor pollicis?

A)median
B)ulnar
C)radial
D)a and b

Question 69

The palmaris brevis overlies

A)the dorsal surface of the hand.
B)the muscles of the thenar eminence of the hand.
C)the muscles of the hypothenar eminence of the hand.
D)the muscles of the central compartment of the hand.

Question 70

Which nerves provide innervation to the intrinsic muscles of the hand?

A)median and radial
B)ulnar and axillary
C)median and ulnar
D)musculocutaneous and radial

Question 71

Which nerve innervates the muscles of the hypothenar eminence of the hand?

A)median
B)radial
C)ulnar
D)none of the above

Question 72

All three intrinsic hand muscles of the thenar eminence move the

A)thumb (finger number one).
B)index finger (finger number two).
C)ring finger (finger number four).
D)little finger (finger number five).

Question 73

What nerve(s)innervates the palmar interossei?

A)median
B)ulnar
C)radial
D)a and b

Question 74

Which intrinsic muscle of the hand is a superficial fascial muscle?

A)abductor digiti minimi manus
B)flexor pollicis
C)palmaris brevis
D)lumbricals manus

Question 75

What nerve(s)innervates the lumbricals manus?

A)median
B)ulnar
C)radial
D)a and b

Question 76

Which thenar eminence muscle is the most superficial of the three?

A)abductor digiti minimi manus
B)abductor pollicis brevis
C)flexor pollicis brevis
D)opponens pollicis

Question 77

Which nerve provides the principal innervation to the muscles of the central compartment of the hand?

A)median
B)radial
C)ulnar
D)none of the above

Question 78

All three intrinsic hand muscles of the hypothenar eminence move the

A)thumb (finger number one).
B)index finger (finger number two).
C)ring finger (finger number four).
D)little finger (finger number five).

Question 79

What are the three intrinsic hand muscles of the hypothenar eminence?

A)abductor digiti minimi manus,flexor digiti minimi manus,and opponens digiti minimi
B)abductor pollicis brevis,flexor pollicis brevis,and opponens pollicis
C)adductor pollicis,lumbricals manus,palmar interossei,and dorsal interossei manus
D)abductor digiti minimi pedis,flexor digiti minimi pedis,and opponens digiti minimi

Question 80

Which nerve provides the principal innervation to the muscles of the thenar eminence of the hand?

A)median
B)radial
C)ulnar
D)none of the above