Autonomic Nervous System - Quiz 16

internal organs, vasculature, hypothalamus

Role of the autonomic nervous system in maintaining homeostasis:

- Regulates ________ ______ and ___________

- ____________ - homeostasis master control

dorsal, spinal cord, 3 7 9 10, nucleus, pons, medulla, hypothalamus, thalamus, cerebrum

Routes by which information reaches the CNS from the viscera:

Visceral receptors -> ______ roots -> ______ ____ OR

Visceral receptors -> CN _, _, _, _ -> brainstem _______ -> ____, _______, ____________, ________, ________

HR, respiration, vasoconstriction, vasodilation

Medulla can regulate:

preganglionic, acetylcholine, postganglionic, norepinephrine, acetylcholine

Two neurons carry motor information from CNS to target

o _____________ efferents release _____________

o ______________

- Sympathetic release ______________

- Parasympathetic release ______________

viscera, walls, circulatory, involuntary/unconscious, independently

Autonomic efferent system:

Innervates _______, visceral _____, ___________ system

___________/___________

Many organs function _____________ of the CNS

blood flow, temperature, metabolic, viscera

Primary activities of the sympathetic nervous system during homeostasis:

Optimize _____ ____

Regulate body ___________

Regulate _________ rate

Regulate activity of the _______

blood flow, smooth, vasoconstriction, vasodilation

The sympathetic nervous system's main job is to optimize _____ ____

It does so by:

Maintaining contraction of ______ vessel walls. Increased sympathetic activity leads to ________________ and decreased sympathetic activity leads to ____________.

adrenal, epinephrine, diameter, secretion

Sympathetic regulation of body temperature:

_______ medulla stimulated to release ___________ into blood stream

Increase/decrease dissipation of heat from skin by modulating:

-________ of blood vessels

-Sweat _________

-Erection of hair

beta 1, beta 2, sphincters, blood, contraction

Sympathetic regulation of visceral activity:

____ _ increase cardiac contractility

____ _ increase airway dilation in lungs

In the GI, contraction of __________ and decrease in:

- _____ flow

- Peristalsis

- Secretion

- Inhibits ___________ in bowl and bladder

cardiac, digestion, secretions

Primary activities of the parasympathetic nervous system during homeostasis:

- Decrease _______ activity

- Facilitate _________

- Increase __________

- Controls voiding and sexual organs

PS, S, S, PS

PS or S?

Constrict pupils

Decrease salivary/lacrimal secretion

Dilate pupils

Increase salivary/lacrimal secretion