Physiology Exam 2 Practice Questions
With Correct Answers
Which part of a neuron is primarily characterized as the information-
| | | | | | | | | |
receiving component? |
presynaptic terminal |
axon
cell body
|
dendrite - CORRECT ANSWER✔✔-dendrite
| | |
Most special sensory neurons are
| | | |
unipolar
pseudounipolar
bipolar
multipolar - CORRECT ANSWER✔✔-bipolar
| | |
A spinal nerve (aka peripheral nerve) can carry which type of axons?
| | | | | | | | | | |
,somatic sensory |
somatic motor |
sympathetic motor |
none of the above
| | |
| all of the above - CORRECT ANSWER✔✔-all of the above
| | | | | | | | |
Which effect is commonly associated with activation of the
| | | | | | | | |
parasympathetic nervous system? | |
increased heart rate | |
increased intestinal motility
| |
dilation of pupils | |
constriction of pyloric sphincter - CORRECT ANSWER✔✔-increased
| | | | | | |
intestinal motility |
A neurotransmitter most often found at the synapse between
| | | | | | | | |
sympathetic postganglionic neurons and their targets is:
| | | | | |
epinephrine (EPI) |
norepinephrine (NE) |
acetycholine (ACh) |
serotonin (SE) - CORRECT ANSWER✔✔-norepinephrine (NE)
| | | | |
,Which two ions are most important to the neuron membrane potential?
| | | | | | | | | |
Na+ and Cl-
| |
K+ and Cl-
| |
Na+ and K+| |
K+ and Ca2+ - CORRECT ANSWER✔✔-Na+ and K+
| | | | | | |
Which kind of ion channel is most closely associated with graded
| | | | | | | | | | |
potentials?
leak ion channels
| |
ligand-gated ion channels | |
voltage-gated ion channels | |
mechanically-gated ion channels - CORRECT ANSWER✔✔-ligand-gated
| | | | | |
ion channels
|
Which type of local change to the membrane potential causes the
| | | | | | | | | | |
membrane potential to become more positive than resting membrane
| | | | | | | | |
potential?
depolarization
, repolarization
hyperpolarization - CORRECT ANSWER✔✔-depolarization | | |
Synapses can occur between: | | |
dendrites and axons | |
cell bodies of neurons and axons
| | | | |
axons and axons
| |
all of the above - CORRECT ANSWER✔✔-all of the above
| | | | | | | | |
Neuronal postsynaptic potentials are associated with neurotransmitters
| | | | | | |
binding to receptors on a cell membrane. These postsynaptic potentials
| | | | | | | | | |
can have the following properties or mechanisms, except:
| | | | | | |
action potentials |
graded potentials |
excitatory
inhibitory - CORRECT ANSWER✔✔-action potentials
| | | |
Which of the following is the primary neurotransmitter of the
| | | | | | | | | |
neuromuscular junction? |
With Correct Answers
Which part of a neuron is primarily characterized as the information-
| | | | | | | | | |
receiving component? |
presynaptic terminal |
axon
cell body
|
dendrite - CORRECT ANSWER✔✔-dendrite
| | |
Most special sensory neurons are
| | | |
unipolar
pseudounipolar
bipolar
multipolar - CORRECT ANSWER✔✔-bipolar
| | |
A spinal nerve (aka peripheral nerve) can carry which type of axons?
| | | | | | | | | | |
,somatic sensory |
somatic motor |
sympathetic motor |
none of the above
| | |
| all of the above - CORRECT ANSWER✔✔-all of the above
| | | | | | | | |
Which effect is commonly associated with activation of the
| | | | | | | | |
parasympathetic nervous system? | |
increased heart rate | |
increased intestinal motility
| |
dilation of pupils | |
constriction of pyloric sphincter - CORRECT ANSWER✔✔-increased
| | | | | | |
intestinal motility |
A neurotransmitter most often found at the synapse between
| | | | | | | | |
sympathetic postganglionic neurons and their targets is:
| | | | | |
epinephrine (EPI) |
norepinephrine (NE) |
acetycholine (ACh) |
serotonin (SE) - CORRECT ANSWER✔✔-norepinephrine (NE)
| | | | |
,Which two ions are most important to the neuron membrane potential?
| | | | | | | | | |
Na+ and Cl-
| |
K+ and Cl-
| |
Na+ and K+| |
K+ and Ca2+ - CORRECT ANSWER✔✔-Na+ and K+
| | | | | | |
Which kind of ion channel is most closely associated with graded
| | | | | | | | | | |
potentials?
leak ion channels
| |
ligand-gated ion channels | |
voltage-gated ion channels | |
mechanically-gated ion channels - CORRECT ANSWER✔✔-ligand-gated
| | | | | |
ion channels
|
Which type of local change to the membrane potential causes the
| | | | | | | | | | |
membrane potential to become more positive than resting membrane
| | | | | | | | |
potential?
depolarization
, repolarization
hyperpolarization - CORRECT ANSWER✔✔-depolarization | | |
Synapses can occur between: | | |
dendrites and axons | |
cell bodies of neurons and axons
| | | | |
axons and axons
| |
all of the above - CORRECT ANSWER✔✔-all of the above
| | | | | | | | |
Neuronal postsynaptic potentials are associated with neurotransmitters
| | | | | | |
binding to receptors on a cell membrane. These postsynaptic potentials
| | | | | | | | | |
can have the following properties or mechanisms, except:
| | | | | | |
action potentials |
graded potentials |
excitatory
inhibitory - CORRECT ANSWER✔✔-action potentials
| | | |
Which of the following is the primary neurotransmitter of the
| | | | | | | | | |
neuromuscular junction? |
