WCU PHYS 261 Week 3 Quiz: Ch 8, 9,
10 questions well answered
Multiple sclerosis (MS) is a central nervous system disorder that results from demyelination of
axons in the central nervous system. Which type of tissue would be least at risk for damage
from MS? - correct answer ✔✔ gray matter
Inhibitory postsynaptic potentials (IPSPs) - correct answer ✔✔ result in hyperpolarizations
Match the type of signal to its description.
A. graded potential
B. action potential
C. both
originate(s) on dendrites and cell bodies - correct answer ✔✔ graded potential
The ion necessary to initiate the release of acetylcholine into the synaptic cleft is - correct
answer ✔✔ calcium
The brain and spinal cord together compose the - correct answer ✔✔ central nervous system
Match the stimulus to the type of receptor that typically responds to it.
A. chemoreceptor
B. mechanoreceptor
, oxygen - correct answer ✔✔ chemoreceptor
The cilia of the hair cells of the semicircular canals are embedded in the - correct answer ✔✔
cupula
Which of the following is NOT a similarity between hearing and equilibrium? - correct answer
✔✔ they both respond to sound waves
Match the term with its description.
A. ependymal cells
B. astrocytes
C. satellite cells
D. schwann cells
E. oligodendrocytes
F. microglia
highly branched cells that transfer nutrients between blood vessels and neurons - correct
answer ✔✔ astrocytes
Tsering's father suffers a stroke that leaves him partially paralyzed on his right side. What type
of glial cell would you expect to find in increased numbers in the damaged area of the brain that
is affected by the stroke? - correct answer ✔✔ microglia
The rising phase of the action potential is due to - correct answer ✔✔ Na+ flow into the cell
only.
10 questions well answered
Multiple sclerosis (MS) is a central nervous system disorder that results from demyelination of
axons in the central nervous system. Which type of tissue would be least at risk for damage
from MS? - correct answer ✔✔ gray matter
Inhibitory postsynaptic potentials (IPSPs) - correct answer ✔✔ result in hyperpolarizations
Match the type of signal to its description.
A. graded potential
B. action potential
C. both
originate(s) on dendrites and cell bodies - correct answer ✔✔ graded potential
The ion necessary to initiate the release of acetylcholine into the synaptic cleft is - correct
answer ✔✔ calcium
The brain and spinal cord together compose the - correct answer ✔✔ central nervous system
Match the stimulus to the type of receptor that typically responds to it.
A. chemoreceptor
B. mechanoreceptor
, oxygen - correct answer ✔✔ chemoreceptor
The cilia of the hair cells of the semicircular canals are embedded in the - correct answer ✔✔
cupula
Which of the following is NOT a similarity between hearing and equilibrium? - correct answer
✔✔ they both respond to sound waves
Match the term with its description.
A. ependymal cells
B. astrocytes
C. satellite cells
D. schwann cells
E. oligodendrocytes
F. microglia
highly branched cells that transfer nutrients between blood vessels and neurons - correct
answer ✔✔ astrocytes
Tsering's father suffers a stroke that leaves him partially paralyzed on his right side. What type
of glial cell would you expect to find in increased numbers in the damaged area of the brain that
is affected by the stroke? - correct answer ✔✔ microglia
The rising phase of the action potential is due to - correct answer ✔✔ Na+ flow into the cell
only.
