Orbicularis oris ________.

A) closes, purses, and protrudes the lips
B) pulls the lower lip down and back
C) draws the eyebrows together
D) allows blinking, squinting, and various other protective mechanisms for the eye


Answer: A) closes, purses, and protrudes the lips

Anatomy & Physiology

You might also like to view...

Which structure in the figure is the ventricular fold?

a) F b) D c) C d) E e) G

Anatomy & Physiology

The third and final stage of labor involves the actual birth of the baby

Indicate whether the statement is true or false

Anatomy & Physiology

The plateau phase seen during the action potential of a cardiac muscle cell is due to the

A. sodium-potassium pump. B. opening of sodium channels. C. continuing to have open calcium channels. D. closure of chloride channels. E. closing of calcium channels.

Anatomy & Physiology

On axial CT images of the spine, the ____________________ articulating processes are more medial (superior or inferior).

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology