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BIO 203 Purdue Exam 3 Newest 2025
Complete All 100 Questions And Correct
Detailed Answers (Verified Answers)
|Already Graded A+||Brand New Version!!
Name the three branches of the autonomic nervous
system. - . . ANSWER ✔ ✔Sympathetic- fight or
flight...stimulatory
Parasympathetic- rest and digest...inhibitory
Enteric- gastrointesitnal system
Describe in a diagram the basic differences (including the
occurrence of ganglia) between the autonomic nervous
system and the somatic nervous system. - . . ANSWER ✔
✔ANS: involuntary functions, like breathing and heart
beating
SoNS: voluntary movement, mostly in skeletal muscle
State the 3 locations where acetylcholine is a
neurotransmitter. - . . ANSWER ✔ ✔CNS (muscarinic and
nicotinic), Autonomic (muscarinic and nicotinic),
Neuromuscular (nicotinic)
,2|Page
Describe the discovery and chemical identification of
"vagusstoff" = acetylcholine (include the names of the
scientists involved Loewi, Dale). - . . ANSWER ✔
✔Loewi's 1921 experiment to find Vagusstoff, Dale later
found that Vagusstoff was Acetylcholine and later shared
Nobel Prize in Physiology in Medicine
List the groups of autonomic ganglia, and state which
division of the autonomic nervous system they are
associated with. - . . ANSWER ✔ ✔Sympathetic:
paravertebral and prevertebral
Parasympathetic: intramural (or terminal)
Draw the origins and pathways of pre- and postganglionic
fibers in the sympathetic branch of the autonomic nervous
system. - . . ANSWER ✔ ✔fired from higher order brain
region and releases AcCh at the pre and post junctions to
be picked up by nicotinic receptor, Post-Gang carries
signal and releases Norepinephrine at carious parts of
body to be accepted by alpha or beta adrenergic receptors
Draw the origins and pathways of pre- and postganglionic
fibers in the cranial and sacral divisions of the
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parasympathetic (don't forget the cranial nerves and the
ganglia associated with them). - . . ANSWER ✔ ✔Cranial
and sacral; Cranial in control (III, VII, IX, X -- X is most
important); send signal via preganglionic nerve and that
causes AcCh release @ junction between pre and post
ganglionic, receptor is nicotinic and postganglionic will
continue signal down axon and release AcCh at its junction
w organ
Give a description of the enteric branch of the autonomic
nervous system and name one of its neurotransmitters. - . .
ANSWER ✔ ✔having to do with intestines and digestive
system; acetylcholine
Describe the adrenal medulla and how it relates to the
sympathetic branch - name the cells in the adrenal
medulla . - . . ANSWER ✔ ✔adrenal medulla is the
principal site of the conversion of the amino acid tyrosine
into the catecholamines epinephrine, norepinephrine, and
dopamine; chromaffin cells - secrete adrenaline
List the receptors for acetylcholine and norepinephrine.
Give some examples of where they are located. - . .
ANSWER ✔ ✔nicotinic and muscinaric; neuromuscular
, 4|Page
junction and autonomic ganglia; brain, heart, smooth
muscle and parasympathetic nervous system
preganglionic neurons - . . ANSWER ✔ ✔A motor neuron
having a cell body located in the brain or spinal cord and a
myelinated axon that travels out of the central nervous
system as part of a cranial or spinal nerve before
separating; CHOLINERGIC
White rami - . . ANSWER ✔ ✔contains preganglionic
sympathetic fibers and visceral fibers which are
myelinated; (myelin = lipid = white)
Grey rami - . . ANSWER ✔ ✔contains postganglionic
sympathetic fibers; non myelinated, no lipids
function of sympathetic trunk - . . ANSWER ✔ ✔distribute
sympathetic innervation throughout the body
otic ganglia - . . ANSWER ✔ ✔functionally associated with
the glossopharyngeal nerve and innervates the parotid
gland for salivation.
BIO 203 Purdue Exam 3 Newest 2025
Complete All 100 Questions And Correct
Detailed Answers (Verified Answers)
|Already Graded A+||Brand New Version!!
Name the three branches of the autonomic nervous
system. - . . ANSWER ✔ ✔Sympathetic- fight or
flight...stimulatory
Parasympathetic- rest and digest...inhibitory
Enteric- gastrointesitnal system
Describe in a diagram the basic differences (including the
occurrence of ganglia) between the autonomic nervous
system and the somatic nervous system. - . . ANSWER ✔
✔ANS: involuntary functions, like breathing and heart
beating
SoNS: voluntary movement, mostly in skeletal muscle
State the 3 locations where acetylcholine is a
neurotransmitter. - . . ANSWER ✔ ✔CNS (muscarinic and
nicotinic), Autonomic (muscarinic and nicotinic),
Neuromuscular (nicotinic)
,2|Page
Describe the discovery and chemical identification of
"vagusstoff" = acetylcholine (include the names of the
scientists involved Loewi, Dale). - . . ANSWER ✔
✔Loewi's 1921 experiment to find Vagusstoff, Dale later
found that Vagusstoff was Acetylcholine and later shared
Nobel Prize in Physiology in Medicine
List the groups of autonomic ganglia, and state which
division of the autonomic nervous system they are
associated with. - . . ANSWER ✔ ✔Sympathetic:
paravertebral and prevertebral
Parasympathetic: intramural (or terminal)
Draw the origins and pathways of pre- and postganglionic
fibers in the sympathetic branch of the autonomic nervous
system. - . . ANSWER ✔ ✔fired from higher order brain
region and releases AcCh at the pre and post junctions to
be picked up by nicotinic receptor, Post-Gang carries
signal and releases Norepinephrine at carious parts of
body to be accepted by alpha or beta adrenergic receptors
Draw the origins and pathways of pre- and postganglionic
fibers in the cranial and sacral divisions of the
,3|Page
parasympathetic (don't forget the cranial nerves and the
ganglia associated with them). - . . ANSWER ✔ ✔Cranial
and sacral; Cranial in control (III, VII, IX, X -- X is most
important); send signal via preganglionic nerve and that
causes AcCh release @ junction between pre and post
ganglionic, receptor is nicotinic and postganglionic will
continue signal down axon and release AcCh at its junction
w organ
Give a description of the enteric branch of the autonomic
nervous system and name one of its neurotransmitters. - . .
ANSWER ✔ ✔having to do with intestines and digestive
system; acetylcholine
Describe the adrenal medulla and how it relates to the
sympathetic branch - name the cells in the adrenal
medulla . - . . ANSWER ✔ ✔adrenal medulla is the
principal site of the conversion of the amino acid tyrosine
into the catecholamines epinephrine, norepinephrine, and
dopamine; chromaffin cells - secrete adrenaline
List the receptors for acetylcholine and norepinephrine.
Give some examples of where they are located. - . .
ANSWER ✔ ✔nicotinic and muscinaric; neuromuscular
, 4|Page
junction and autonomic ganglia; brain, heart, smooth
muscle and parasympathetic nervous system
preganglionic neurons - . . ANSWER ✔ ✔A motor neuron
having a cell body located in the brain or spinal cord and a
myelinated axon that travels out of the central nervous
system as part of a cranial or spinal nerve before
separating; CHOLINERGIC
White rami - . . ANSWER ✔ ✔contains preganglionic
sympathetic fibers and visceral fibers which are
myelinated; (myelin = lipid = white)
Grey rami - . . ANSWER ✔ ✔contains postganglionic
sympathetic fibers; non myelinated, no lipids
function of sympathetic trunk - . . ANSWER ✔ ✔distribute
sympathetic innervation throughout the body
otic ganglia - . . ANSWER ✔ ✔functionally associated with
the glossopharyngeal nerve and innervates the parotid
gland for salivation.
