final exam 1

Question 1

sympathetic division is also called

Answer 1

thoracolumbar division

Question 2

all nerve fibers of sympathetic division arise from ____?

Answer 2

thoracic and lumbar regions of spinal cord

Question 3

the preganglionic neurosomas are in _______

Answer 3

lateral horns and gray matter of spinal cord

Question 4

axons in symp. division exit through __________

Answer 4

spinal nerves T1-L2

Question 5

long preganglionic nerve fibers that release ACh, short postganglionic nerve fibers that release ACh

Answer 5

parasympathetic division

Question 6

short preganglionic nerve fibers that release ACh, short postganglionic nerve fibers that release norepinephrine

Answer 6

sympathetic division

Question 7

When norepinephrine binds to beta-adrenergic receptors on the heart, the response is this:

Answer 7

excitatory

Question 8

which nerve carries the most parasympathetic nerve fibers?

Answer 8

vagus nerve

Question 9

all autonomic nerve fibers secrete either _____ or _____

Answer 9

acetylcholine, norepinephrine

Question 10

secreted by preganglionic fibers in both divisions and the postganglionic fibers of the parasympathetic division

Answer 10

acetylcholine (ACh)

Question 11

any nerve fiber that secretes ACh is called a __________, and any receptor that binds it is called a __________

Answer 11

cholinergic fiber, cholinergic receptor

Question 12

all cardiac muscle, smooth muscle and gland cells with cholinergic innervation have ______ receptors

Answer 12

muscarinic

Question 13

what are the 2 categories of cholinergic receptors

Answer 13

muscarinic receptors and nicotinic receptors

Question 14

_______ receptors occur at all synapses in the autonomic ganglia

Answer 14

nicotinic

Question 15

the binding of ACh to a nicotinic receptor is always ______

Answer 15

excitatory

Question 16

_______ receptors work by opening ligand-gated ion channels and producing an excitatory postsynaptic potential in the target cell

Answer 16

nicotinic