Questions: Question 21 What do the genioglossus, hyoglossus, and styloglossus muscles have in comnnon? A All names reflect direction of muscle fibers. B Each acts synergistically to elevate the jaw. C) All names indicate the relative size of the muscle. D All act on the tongue. Last saved 6:27:04 PM

The answer is D: All act on the tongue.

Explanation for each option:

A. All names reflect direction of muscle fibers.

• This is incorrect. The names of these muscles do not reflect the direction of muscle fibers. Instead, they are named based on their points of origin and insertion.

B. Each acts synergistically to elevate the jaw.

• This is incorrect. These muscles are involved in tongue movement, not jaw elevation.

C. All names indicate the relative size of the muscle.

• This is incorrect. The names do not indicate the size of the muscles; they are named based on their anatomical connections.

D. All act on the tongue.

• This is correct. The genioglossus, hyoglossus, and styloglossus muscles are all involved in movements of the tongue.