Lecture 1: Autonomic Nervous System Flashcards
Peripheral Nervous system
-autonomic
-somatic
autonomic nervous system
-REGULATE activity of smooth and cardiac muscle
-autonomic tone
-sympathetic and parasympathetic
autonomic tone
-involuntary
-pathways work while we rest
somatic nervous system
-control skeletal muscles
Sympathetic nervous system
fight or flight
parasympathetic
rest and digest
ANS pathway
-2 neurons
-preganglionic neron to postganglionic neuron to target cell
Preganglionc Neuron
-CNS
-first neuron in ANS signal pathway
-projects to ganglia
Postganglionic Neuron
-Peripheral
-projects to target organ
Primary transmitter of ALL PREganglionic neurons
acetylcholine
transmitter in PSNS POSTganglionic neurons
acetylcholine
transmitter in most SNS POSTganglionic neurons
norepinephrine
Acetylcholine
-transmitter of PREganglionic neurons and PSNS POSTganglionic neurons
-also in sweat glands
Norepinephrine
-transmitter in most SNS POSTganglionic neurons
Epinephrine
adrenal medulla