A circular muscle that acts as a valve is called a

A. plicae.
B. epiglottis.
C. sphincter.
D. diaphragm.


Answer: C

Anatomy & Physiology

You might also like to view...

Axons cross from one side of the spinal cord to the other through the

A) lateral white column. B) posterior gray horn. C) central canal. D) posterior median sulcus. E) anterior white commissure.

Anatomy & Physiology

Which group of drugs works by inhibiting the enzyme that destroys neurotransmitters?

a. SSRI b. TCA c. MAOI d. GABA

Anatomy & Physiology

The middle abdominopelvic regions include the:

a. right and left lumbar and umbilical b. right and left lumbar and epigastric c. right and left iliac and hypogastric d. right and left iliac and umbilical

Anatomy & Physiology

Secretion of ADH would ______

A) decrease urine output B) decrease glomerular filtration rate C) increase urine output D) increase glomerular filtration rate

Anatomy & Physiology