Key Terms Instructions: Please Define the Following Key Terms

question 79

Essay

Key Terms Instructions: Please define the following key terms. Show Who? What? Where? When? Why Important?
Somme

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Definitions:

Homeostasis

The process by which a living organism regulates its internal environment to maintain a stable, constant condition.

Vagus Nerve

The tenth cranial nerve that innervates digestive organs, heart and other areas, and is part of the parasympathetic nervous system.

Reflexes

are involuntary and nearly instantaneous movements in response to a stimulus as part of the body's defense mechanism.

Blood-Brain Barrier

Permeability barrier controlling the passage of most large-molecular compounds from the blood to the cerebrospinal fluid and brain tissue; consists of capillary endothelium and may include the astrocytes.