Lecture 14- Autonomic Nervous System I Flashcards
Is the autonomic nervous system under voluntary control
No
What is the opposite of the autonomic nervous system?
Somatic nervous system
Is the autonomic nervous system sensory or motor?
Motor
What are the two branches of the autonomic nervous system?
Sympathetic and parasympathetic
GVA stands for
general visceral afferent
SVA stands for
Specific visceral afferent
What does the GVA collect information from?
pressure, stretch, and chemical change
What does the SVA collect information from?
Taste and olfaction
What controls the ANS
hypothalamus and reticular formation
What does PNS stand for
parasympathetic nervous system
What does the PNS control?
Rest and digest
What does the SNS control?
Fight or flight
Is the SNS or PNS usually always active at a low level?
PNS
How many neurons in a somatic neuron system?
One
How many neurons in a autonomic neuron system?
Two (pre and post ganglionic)
Where do parasympathetic preganglionic neurons leave the CNS?
brainstem and sacral spinal cord
What is another name for the parasympathetic nervous system?
craniosacral nervous system
Where do the SNS preganglionic neurons leave the CNS?
thoracolumbar spinal cord
What is another name for the SNS?
thoracolumbar nervous system
Where are the preganglionic cell bodies of the SNS located?
lateral horn of T1-L3
Where are the SNS ganglia located?
sympathetic trunk, close to the spinal cord
Which hormones are stimulated by the sympathetic nervous system?
Epi and NorEpi
Where are the parasympathetic ganglia located?
within the effector organ
Where are the preganglionic PNS neurons exiting the CNS
CN III, VII, IX, and X. S1-S3
Preganglionic NTs
both SNS and PSN use Ach and nicotinic receptors
Postganglionic NTs
SNS uses NE/E on alpha and beta receptors
PNC uses Ach which acts on muscarinic receptors on effector organs
What is the adrenal medulla innervated by?
SNS only!
What is the enteric nervous system part of
A branch of the ANS
