SNS
What does "SNS" stand for?
Somatic Nervous System
What does the ANS innervate?
Viscera, smooth muscle, & glands
What is the main two functions of the parasympathetic division?
Rest & Digest
What is the main two functions of the sympathetic division?
Fight or flight
A finer control of a muscle means a _____ motor unit.
smaller
What does the SNS innervate?
Skeletal Muscle
What is another term for Autonomic?
Visceral
What would the parasympathetic division cause in terms of digestion?
Increase digestion & stimulation of digestive glands
What would the sympathetic division cause in terms of heart rate & lung capacity?
Increase heart rate & Bronchodilation (opens lungs)
The _____ is a relay station for smell and is a release center for many hormones.
Hypothalamus
Is the SNS voluntary or involuntary?
Voluntary
What are the two divisions of the ANS?
What is another term for the parasympathetic system?
Craniosacral system
What is another term for the sympathetic system?
The ______ ______ is the horsetail ending of the spinal cord that features individual spinal nerves.
Cauda equina
What Neurotransmitter is involved in the SNS?
ACh
How many motor neurons does the ANS Feature?
What are the 4 cranial nerves specialized to focus on the parasympathetic division?
III (oculomotor), VII (facial), IX (glossopharyngeal), X (vagus)
What is the special neurotransmitter found in the postganglionic fibers of the sympathetic division?
Norepinephrine
Myelinates single axons at a time.
Does the SNS feature preganglionic & postganglionic neruons?
No
What are the neurotransmitters involved in the ANS?
ACh & NE
Which is longer in the parasympathetic division: pre or postganglionic neurons?
Preganglionic
Which is longer in the sympathetic division: pre or postganglionic neurons?
Postganglionic
A parasympathetic preganglionic & postganglionic synapse is an example of what type of synapses?
Chemical synapses