Ch 14 - Autonomic Nervous System (ANS)

autonomic nervous system

regulates subconscious activities that maintain homeostasis

Which parts of the brain control autonomic functions?

brainstem and hypothalamus

Increased heart rate and respiratory rate would be an effect of activating the _____ division of the ANS.

sympathetic

Increased secretion by digestive glands and motility of digestive organs would be an effect of activating the _____ division of the ANS.

parasympathetic

preganglionic neurons originate in the brainstem or sacral segments of spinal cord

parasympathetic

Preganglionic fiber is long, postganglionic fiber is long

parasympathetic

Autonomic ganglia are close to target effectors

parasympathetic

Preganglionic and ganglionic neurons both release ACh

parasympathetic

Preganglionic neurons originate in the lateral grey horn of thoracic and lumbar segments of spinal cord

sympathetic

Preganglionic fiber is short, postganglionic fiber is long

sympathetic

Autonomic ganglia are close to the spinal column

sympathetic

Preganglionic neuron releases ACh, ganglionic neuron releases E and NE

sympathetic

Which division is the shown photo?

parasympathetic

Which division is the shown photo?

sympathetic

Stretching of the bladder as it fills with urine would be detected by which type of interoceptor?

baroreceptor

dual innervation

when a single organ or tissue receives nerve input from both the sympathetic and parasympathetic divisions of the autonomic nervous system

Which (sympathetic or parasympathetic) is in charge most of the time?

parasympathetic

preganglionic neurons

visceral motor neurons that originate in the CNS and axons travel to autonomic ganglia

autonomic ganglia

found in the CNS and is located where preganglionic and ganglionic neurons synapse

ganglionic neurons

visceral motor neurons that originate in autonomic ganglia of PNS and postganglionic axons carry motor commands to target effectors

chain ganglia

postganglionic fibers target viscera of thoracic cavity, body wall, head, and limbs

collateral ganglia

postganglionic fibers target viscera of abdominopelvic cavity

adrenal medulla

preganglionic neurons release neurotransmitter into bloodstream, and neurotransmitter carried to adrenal gland

Where do preganglionic axons originate?

pons and medulla oblongata

terminal

located near target

intramural

embedded in target tissues

Which visceral reflex arc integration occurs in the CNS?

long

Which visceral reflex arc does not involve CNS?

short