Identify the prostate gland in the following figure.

A) A
B) B
C) C
D) D
E) E

Sympathetic stimulation of the postganglionic cells of the adrenal medulla causes the release of ________.

A) acetylcholine and epinephrine
B) norepinephrine and acetylcholine
C) epinephrine and norepinephrine
D) cortisol
E) aldosterone

In an action potential, depolarization occurs when

A) sodium ions move to the inside of the axon.
B) sodium ions move to the outside of the axon.
C) potassium ions move to the inside of the axon.
D) potassium ions move to the outside of the axon.
E) chlorine ions move to the outside of the axon.

The root cortex is composed mostly of collenchyma cells.