BMS 300 Exam 2 [2026/2027] | UPDATED ACTUAL
Exam Question and Answer | Ultimate Exam Prep
• channels opened by inhibitory neurotransmitters to increase Cl- permeability are:
-✓✓ -responsible for initiating inhibitory post synaptic potentials (IPSPs)
-ligand-gated ion channels
• destruction of the dorsal column nuclei on the right side would block the arrive
of: -✓✓ fine touch and proprioception from the right side of the body
• potentials initiated in a 5-centimeter long neuron whose plasma membrane lacks
v-gated channels would: -✓✓ normally dissipate within a few millimeters of the
site of their initiation
• the information carried by action potentials is determined by: -✓✓ the number
and frequency of action potentials in a series
• In skeletal muscle, the role of the v-gated Na+ channel is to: -✓✓ -propagate the
action potential from the neuromuscular synapse over the sarcolemma
-provide the increase in positive charge that opens and removes the DHP block
from the RYR receptor
• in skeletal muscle cells, Ca2+ enters the cytoplasm of the muscle cell (the
sarcoplasm) from the ______________ through ________? -✓✓ sarcoplasmic
receptors; ryanodine receptors
• in synaptic inhibition, opening ____ channels ____ the membrane resistance to
______ the amplitude and duration of EPSPs. -✓✓ Cl-; decreases, decreases
, • the output region of an upper motor neuron would be located in the: -✓✓ ventral
horn of the spinal cord
• the cell type affected by the low ATP levels that produces a buildup of
neurotransmitters in the synaptic clefts would most likely be: -✓✓ astrocytes
• you would expect to find the highest density of oligodendrocytes in: -✓✓ tracts
• for the input region of a lower motor neuron, the amplitude of the excitatory
postsynaptic potential is: -✓✓ graded with the number of ligand-gated channels
that open
• depolarizing potential is known as: -✓✓ the generator potential
• when muscle lengthens what kind of channels open to admit Na+? -✓✓ stretch
activated
• Na+ channels exceed ______ if the rate of Na+ influx exceeds the rate of K+
efflux -✓✓ threshold
• Na+ signals propagate into the spinal cord gray matter to reach what region? -✓✓
output region
• increase in (+) in the output region of a neuron opens what kind of channels? -
✓✓ Ca2+
Exam Question and Answer | Ultimate Exam Prep
• channels opened by inhibitory neurotransmitters to increase Cl- permeability are:
-✓✓ -responsible for initiating inhibitory post synaptic potentials (IPSPs)
-ligand-gated ion channels
• destruction of the dorsal column nuclei on the right side would block the arrive
of: -✓✓ fine touch and proprioception from the right side of the body
• potentials initiated in a 5-centimeter long neuron whose plasma membrane lacks
v-gated channels would: -✓✓ normally dissipate within a few millimeters of the
site of their initiation
• the information carried by action potentials is determined by: -✓✓ the number
and frequency of action potentials in a series
• In skeletal muscle, the role of the v-gated Na+ channel is to: -✓✓ -propagate the
action potential from the neuromuscular synapse over the sarcolemma
-provide the increase in positive charge that opens and removes the DHP block
from the RYR receptor
• in skeletal muscle cells, Ca2+ enters the cytoplasm of the muscle cell (the
sarcoplasm) from the ______________ through ________? -✓✓ sarcoplasmic
receptors; ryanodine receptors
• in synaptic inhibition, opening ____ channels ____ the membrane resistance to
______ the amplitude and duration of EPSPs. -✓✓ Cl-; decreases, decreases
, • the output region of an upper motor neuron would be located in the: -✓✓ ventral
horn of the spinal cord
• the cell type affected by the low ATP levels that produces a buildup of
neurotransmitters in the synaptic clefts would most likely be: -✓✓ astrocytes
• you would expect to find the highest density of oligodendrocytes in: -✓✓ tracts
• for the input region of a lower motor neuron, the amplitude of the excitatory
postsynaptic potential is: -✓✓ graded with the number of ligand-gated channels
that open
• depolarizing potential is known as: -✓✓ the generator potential
• when muscle lengthens what kind of channels open to admit Na+? -✓✓ stretch
activated
• Na+ channels exceed ______ if the rate of Na+ influx exceeds the rate of K+
efflux -✓✓ threshold
• Na+ signals propagate into the spinal cord gray matter to reach what region? -✓✓
output region
• increase in (+) in the output region of a neuron opens what kind of channels? -
✓✓ Ca2+
