BIOL460 EXAM 3 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
collateral ganglia
Anterior to the vertebral bodies; innervate tissues and organs in the abdominopelvic
cavity
- include celiac and superior/inferior mesenteric
Preganglionic Neurons
originate in midbrane and hindbrain
Cell body in CNS, synapse with postganglionic neuron
Postganglionic Neurons
Cell body in ganglia, synapse with effector
visceral effectors
- Contract rhythmically on its own without neural input
- Damage autonomic neuron → makes target more sensitive to stimulation: denervation
hypersensitivity
Smooth muscle will maintain tension
atrophy
what happens in somatic when it denervates
Hypersensitivity
what happens in autonomic when it denervates
Ach
main neurotransmitter for stimulation somatic cells
, ach and NE
main neurotransmitter for stimulation autonommic cells
thoracic and lumbar
where are postg located in sympathetic division?
Divergence
1 preg synapses on several postg neuron
convergence
several preg synapse on 1 postg neuron
adrenal gland
endocrine glands that sit on the kidneys and produce hormones such as epinephrine
adrenal cortex
outer layer, secretes steroid hormones
adrenal medulla
modified ganglion
inner layer, secretes epinephrine and norepinephrine
- innervated directly by preganglionic sympathetic neurons
-sympathoadrenal system
sacral region
where are preganglionic fibers located in the parasympathetic division?
effector organs
where are postganglionic fibers located in the parasympathetic division?
cutaneous effectors
effectors of skin: blood vessels, sweat glands, arrector pili muscles
COMPLETE SOLUTIONS VERIFIED
collateral ganglia
Anterior to the vertebral bodies; innervate tissues and organs in the abdominopelvic
cavity
- include celiac and superior/inferior mesenteric
Preganglionic Neurons
originate in midbrane and hindbrain
Cell body in CNS, synapse with postganglionic neuron
Postganglionic Neurons
Cell body in ganglia, synapse with effector
visceral effectors
- Contract rhythmically on its own without neural input
- Damage autonomic neuron → makes target more sensitive to stimulation: denervation
hypersensitivity
Smooth muscle will maintain tension
atrophy
what happens in somatic when it denervates
Hypersensitivity
what happens in autonomic when it denervates
Ach
main neurotransmitter for stimulation somatic cells
, ach and NE
main neurotransmitter for stimulation autonommic cells
thoracic and lumbar
where are postg located in sympathetic division?
Divergence
1 preg synapses on several postg neuron
convergence
several preg synapse on 1 postg neuron
adrenal gland
endocrine glands that sit on the kidneys and produce hormones such as epinephrine
adrenal cortex
outer layer, secretes steroid hormones
adrenal medulla
modified ganglion
inner layer, secretes epinephrine and norepinephrine
- innervated directly by preganglionic sympathetic neurons
-sympathoadrenal system
sacral region
where are preganglionic fibers located in the parasympathetic division?
effector organs
where are postganglionic fibers located in the parasympathetic division?
cutaneous effectors
effectors of skin: blood vessels, sweat glands, arrector pili muscles
