Name two muscles in each of the following compartments or regions: a. thenar eminence (ball of thumb), b. posterior compartment of forearm, c. anterior compartment of forearm—deep muscle group, d. anterior muscle group in the arm, e. muscles of mastication,

Video transcript

Hey, everyone. Let's take a look at this question together which muscle in the thar eminence is responsible for the abduction of the thumb. Is it? Answer choice. A the flexor polys Brevis, answer choice. D A doctor Poly Brevis, answer choice C extensor Polys Brevis or answer choice. D abductor polys Brevis. Let's work this problem out together to try to figure out which of the following muscles is responsible for the abduction of the thumb. So we are looking for a muscle that is responsible for the abduction of the thumb. And looking at our answer choices, we can see we have a flexor muscle and AUC door muscle, an extensor muscle and an abductor muscle. And since we are looking for abduction, we know that the only muscle here that is responsible for abduction is the abductor Polyus Brevis, which is answer choice. D, the correct answer. Since answer choice, A is responsible for the flexing of the thumb. Answer choice B is responsible for the abduction of the thumb. And answer choice C is responsible for the extension of the thumb. And answer choice. D is the only muscle here that is responsible for abduction of the thumb. So answer choice D is the correct answer. I hope you found this video to be helpful. Thank you and goodbye.