Asked by Garrett Spain on Jul 16, 2024
Verified
Which moves causes opposition of the thumb?
A) adductor pollicis
B) flexor pollicis brevis
C) abductor pollicis brevis
D) opponens pollicis
Opposition
A movement in which the thumb and fingers are brought together, allowing for the manipulation of objects.
Thumb
The first digit of the hand, notable for its opposability, enabling grasping and manipulating objects.
Opponens Pollicis
A small muscle in the hand that allows the thumb to touch the tips of the other fingers, facilitating grip and manipulation of objects.
- Comprehend the roles of various muscles in actions like flexion, extension, abduction, and adduction.
- Evaluate the muscular structures in the upper limb that facilitate certain movements.
Verified Answer
HA
Hayden AlbrightJul 19, 2024
Final Answer :
D
Explanation :
The opponens pollicis is the only muscle that causes opposition of the thumb. Adductor pollicis, flexor pollicis brevis, and abductor pollicis brevis all contribute to thumb movement, but do not cause opposition.
Learning Objectives
- Comprehend the roles of various muscles in actions like flexion, extension, abduction, and adduction.
- Evaluate the muscular structures in the upper limb that facilitate certain movements.