INSTANT
PASS! 2026/2027
Purdue BIOL 203: Exam 4 Questions And
Answers Latest Update 2026
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Lecture 21 - Answer
Autonomic nervous system is __ of the PNS - Answer motor unit
Autonomic nervous system controls __ and ___ muscle - Answer
cardiac and smooth
2 divisions of autonomic nervous system - Answer sympathetic and
parasympathetic
,INSTANT
PASS! 2026/2027
sympathetic "phrase to remember" - Answer fight or flight
parasympathetic "phrase to remember" - Answer relaxation and
digestion
visceral reflexes - Answer unconscious, autonomic, stereotyped
responses to stimulation initiated in viscera
parts of visceral reflex - Answer 1. receptors 2. afferent neurons 3.
integrating center 4. efferent neurons 5. visceral effector
Parasympathetic and Sympathetic - Answer innervate mostly the
same visceral organs but cause opposite effects
parasympathetic aka - Answer craniosacral
sympathetic aka - Answer thoracolumbar
Parasympathetic functional role - Answer works to conserve energy
,INSTANT
PASS! 2026/2027
Sympathetic functional role - Answer active during stress
origin of parasympathetic division - Answer preganglionic neurons
originate in brain stem and sacral region of spinal cord
origin of sympathetic division - Answer preganglionic neurons
originate from thoracic and lumbar regions
paravertebral ganglia - Answer autonomic ganglia superior to the
sympathetic chain ganglia; adjacent to spinal cord
parasympathetic pre & post axon length - Answer pre = longer
post = shorter
sympathetic pre & post axon length - Answer pre = shorter
post = longer
axon length "phrase to remember" - Answer Post Malone on SIM
card stays for a long time
, INSTANT
PASS! 2026/2027
parasympathetic location of ganglion - Answer near visceral organ
they serve
sympathetic location of ganglion - Answer proximal to CNS (run
along vertebral column)
parasympathetic neurotransmitter at effectors - Answer
acetylcholine is the principal neurotransmitter
sympathetic neurotransmitter at effectors - Answer norepinephrine
is the principal neurotransmitter
parasympathetic degree of branching - Answer minimal; some, but
after the preganglionic fiber is reached the target organ
sympathetic degree of branching - Answer extensive; 1 neurons
synapses numerous neurons
somatic structure - Answer single neuron from CNS to effector
organ
autonomic structure - Answer two neuron chain from CNS to organs
PASS! 2026/2027
Purdue BIOL 203: Exam 4 Questions And
Answers Latest Update 2026
EMAIL ME FOR MORE INFO :
Lecture 21 - Answer
Autonomic nervous system is __ of the PNS - Answer motor unit
Autonomic nervous system controls __ and ___ muscle - Answer
cardiac and smooth
2 divisions of autonomic nervous system - Answer sympathetic and
parasympathetic
,INSTANT
PASS! 2026/2027
sympathetic "phrase to remember" - Answer fight or flight
parasympathetic "phrase to remember" - Answer relaxation and
digestion
visceral reflexes - Answer unconscious, autonomic, stereotyped
responses to stimulation initiated in viscera
parts of visceral reflex - Answer 1. receptors 2. afferent neurons 3.
integrating center 4. efferent neurons 5. visceral effector
Parasympathetic and Sympathetic - Answer innervate mostly the
same visceral organs but cause opposite effects
parasympathetic aka - Answer craniosacral
sympathetic aka - Answer thoracolumbar
Parasympathetic functional role - Answer works to conserve energy
,INSTANT
PASS! 2026/2027
Sympathetic functional role - Answer active during stress
origin of parasympathetic division - Answer preganglionic neurons
originate in brain stem and sacral region of spinal cord
origin of sympathetic division - Answer preganglionic neurons
originate from thoracic and lumbar regions
paravertebral ganglia - Answer autonomic ganglia superior to the
sympathetic chain ganglia; adjacent to spinal cord
parasympathetic pre & post axon length - Answer pre = longer
post = shorter
sympathetic pre & post axon length - Answer pre = shorter
post = longer
axon length "phrase to remember" - Answer Post Malone on SIM
card stays for a long time
, INSTANT
PASS! 2026/2027
parasympathetic location of ganglion - Answer near visceral organ
they serve
sympathetic location of ganglion - Answer proximal to CNS (run
along vertebral column)
parasympathetic neurotransmitter at effectors - Answer
acetylcholine is the principal neurotransmitter
sympathetic neurotransmitter at effectors - Answer norepinephrine
is the principal neurotransmitter
parasympathetic degree of branching - Answer minimal; some, but
after the preganglionic fiber is reached the target organ
sympathetic degree of branching - Answer extensive; 1 neurons
synapses numerous neurons
somatic structure - Answer single neuron from CNS to effector
organ
autonomic structure - Answer two neuron chain from CNS to organs
