Voluntary relaxation of the external anal sphincter that triggers defecation is controlled by the __________.

a) vagus nerve
b) sympathetic NS
c) ENS
d) cerebral cortex


Answer: d) cerebral cortex

Anatomy & Physiology

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The cells of the juxtaglomerular apparatus help regulate:

a. ammonia levels b. acid-base balance c. blood pressure d. all of the above

Anatomy & Physiology

The antecubital region is ______ to the brachial region

Fill in the blank with correct word.

Anatomy & Physiology

All of the following changes occur during puberty, except

A) the hypothalamus decreases its production of GnRH. B) FSH levels increase. C) LH levels increase. D) growth rate increases. E) gamete formation begins.

Anatomy & Physiology

Funny channels control which of the following currents?

a. inward sodium b. outward sodium c. inward potassium d. outward potassium e. inward calcium

Anatomy & Physiology