Which of the Following Is the Best Definition of Physiology

question 26

Multiple Choice

Which of the following is the best definition of physiology?

• A) the study of the structure of the human body
• B) the study of the tissues and organs of the human body
• C) the study of organ systems and organs of the body
• D) the study of how the body functions at the various levels of organization

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Definitions:

Parasympathetic Neurons

Nerve cells that are part of the parasympathetic nervous system, which helps in conserving energy and slowing down the heart rate.

Node of Ranvier

Gaps in the myelin sheath of nerve fibers which facilitate the rapid conduction of nerve impulses.

Dendrites

Branched extensions of a neuron that receive signals from other neurons and convey them toward the cell body.

Axon

A long, slender projection of a nerve cell that conducts electrical impulses away from the neuron's cell body.