chapter 16 Flashcards
autonomic nervous system is part of the
motor division of the PNS
subdivisions of the autonomic NS
sympathetic and parasympathetic
what does the autonomic NS do
maintains homeostasis by regulating unconscious activity: smooth and cardiac muscle and glands
constant response to change
ANS shunts blood to needy areas, increase or decrease HR, adjusts BP and temp and increases or decreases stomach secretions & role in sexual arousal and urinary functions
how many neurons are in somatic motor neurons
1
cell body is located in what division of the NS
CNS
the axon extends from CNS to
skeletal muscle
neurotransmitter in somatic motor neurons=
acetylcholine and always excitatory
autonomic motor neurons (how many)
2
what are the two types of autonomic neurons
preganglionic and postganglionic
1st neuron in the series of autonomic motor
preganglionic
in the preganglionic neuron the axon extends to
autonomic ganglion and synapses with postganglionic neurons
whats the neurotransmitter in the preganglionic neuron
Ach
whats the second neuron in the series
postganglionic neuron
cell body is where in the postganglionic neuron
autonomic ganglion in the pns