EXSS 175: MUSCLES 5 EXAM QUESTIONS AND ANSWERS (VERIFIED AND UPDATED)

EXSS 175: MUSCLES 5 EXAM
QUESTIONS AND ANSWERS (VERIFIED
AND UPDATED)



A - ANS Name the following muscle:


A) abductor pollicis brevis
B) opponens pollicis
C) flexor pollicis brevis
D) adductor pollicis


D - ANS What is the origin of the abductor pollicis brevis?


A) capitate, trapezoid, and 2nd and 3rd metacarpal
B) 3rd metacarpal
C) flexor retinaculum, trapezium, and 1st metacarpal bone
D) scaphoid, trapezium, and flexor retinaculum


B - ANS What is the insertion of the abductor pollicis brevis?


A) lateral side of 1st metacarpal
B) base of proximal phalanx of thumb
C) medial side of proximal phalanx


@2026/2027 ALLRIGHTS RESERVED.

, C - ANS What is the action of the abductor pollicis brevis?


A) adduction of thumb
B) flexion of CMC and MCP of thumb, assists in thumb adduction
C) abduction of thumb
D) moves thumb across palm to meet little finger (opposition) at CMC


A - ANS What is the innervation of the abductor pollicis brevis?


A) median nerve
B) ulnar nerve
C) median nerve (1st and 2nd) and ulnar nerve (3rd and 4th)
D) radial nerve


B - ANS Name the following muscle:


A) abductor pollicis brevis
B) opponens pollicis
C) flexor pollicis brevis
D) adductor pollicis


D - ANS What is the origin of the opponens pollicis?


A) capitate, trapezoid, and 2nd and 3rd metacarpal
B) 3rd metacarpal
C) flexor retinaculum, trapezium, and 1st metacarpal bone
D) flexor retinaculum and trapezium

@2026/2027 ALLRIGHTS RESERVED.