Autonomic Nervous System

Front

What are the two divisions of the autonomic nervous system?

Back

The two divisions are the sympathetic nervous system and the parasympathetic nervous system.

Front

What neurotransmitter is primarily responsible for parasympathetic nerve activity?

Back

Acetylcholine.

Front

What is the primary function of the sympathetic nervous system?

Back

To prepare the body for 'fight or flight' responses during stressful situations.

Front

What is the primary function of the parasympathetic nervous system?

Back

To promote 'rest and digest' activities and maintain homeostasis.

Front

How do salivary glands receive innervation?

Back

Salivary glands are innervated by both the sympathetic and parasympathetic divisions of the autonomic nervous system.

Front

What happens to the pupils during parasympathetic stimulation?

Back

The pupils constrict to decrease the amount of light entering the retina.

Front

True or False: The parasympathetic nervous system helps bring the body back to homeostasis.

Back

True.

Front

True or False: Sympathetic stimulation increases digestive secretions.

Back

False. Sympathetic stimulation inhibits digestive secretions.

Front

What is the role of norepinephrine in the autonomic nervous system?

Back

Norepinephrine is primarily involved in sympathetic nervous system responses.

Front

What physiological changes occur during sympathetic activation?

Back

Increased heart rate, dilated pupils, and inhibited digestion.