PSU Bio 141 Exam 2 3 Exam Questions
Complete Latest 2025/2026 with
Correct Answers and Rationales
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Terms in this set (104) Original
the most plentiful neurotransmitter in the body,
released by nerve cells, especially active in
neuromuscular junctions (cardiac, skeletal, and
What is acetylcholine (Ach) smooth)
Excitatory: muscle contraction
Inhibitory: reduction of signaling, like
reduction of HR
Which receptors pick up ACh cholinergic receptors
inhibits AChl; interferes with the degradation
of ACh in the synapse (neuromuscular
Sarin gas
junction); leads to muscle tetani, inability to
control the muscles.
, Atropine inhibits muscarinic ACh receptors
spinal cord and tissue, sensory info, executing
CNS motor commands, higher functioning, both cell
bodies and axons
all neural tissue except CNS, mainly composed
of nerves grouped together in bundles of axons
PNS
the only place to find cell bodies are in
ganglions
Afferent neurons sensory neurons
somatic
3 classes of afferent neurons visceral
special
somatic afferent neurons neurons of the bones, muscles, and skin
visceral afferent neurons neurons of the organs
special afferent neurons neurons involved in hearing, sight, taste, smell
Complete Latest 2025/2026 with
Correct Answers and Rationales
GRADED A+
Terms in this set (104) Original
the most plentiful neurotransmitter in the body,
released by nerve cells, especially active in
neuromuscular junctions (cardiac, skeletal, and
What is acetylcholine (Ach) smooth)
Excitatory: muscle contraction
Inhibitory: reduction of signaling, like
reduction of HR
Which receptors pick up ACh cholinergic receptors
inhibits AChl; interferes with the degradation
of ACh in the synapse (neuromuscular
Sarin gas
junction); leads to muscle tetani, inability to
control the muscles.
, Atropine inhibits muscarinic ACh receptors
spinal cord and tissue, sensory info, executing
CNS motor commands, higher functioning, both cell
bodies and axons
all neural tissue except CNS, mainly composed
of nerves grouped together in bundles of axons
PNS
the only place to find cell bodies are in
ganglions
Afferent neurons sensory neurons
somatic
3 classes of afferent neurons visceral
special
somatic afferent neurons neurons of the bones, muscles, and skin
visceral afferent neurons neurons of the organs
special afferent neurons neurons involved in hearing, sight, taste, smell
