The Peripheral Nervous System Consists of

question 162

Multiple Choice

The peripheral nervous system consists of

• A) interneurons.
• B) the spinal cord.
• C) endocrine glands.
• D) sensory and motor neurons.

---

Definitions:

Pacemaker

An electronic device that is implanted in the body to regulate the heartbeat by delivering electrical impulses to the heart muscle.

AV Node

The Atrioventricular Node, a part of the cardiac conduction system that delays the transmission of electrical impulses from the atria to the ventricles.

Action Potentials

Quick changes in the electrical charge of a neuron's membrane, allowing the transmission of nerve impulses.

Ventricles Repolarize

The process by which the heart's ventricles return to their resting state after contraction, crucial for heart rhythm.