Answers | Latest Version 2024 | Verified
The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for
neurons are
a. Neurofibrils
b. Chromatophilic substances (nissl bodies)
c. Axons
d. Dendrites - ✔✔d. Dendrites
The two types of cells of the nervous system are
a. Axons and dendrites
b. Neurons and neuroglia
c. Motor neurons and sensory neurons
d. Schwann cells and microglia - ✔✔b. Neurons and neuroglia
The functional connection between two neurons is a(n):
a. Dendrite
b. Gap junction
c. Axon terminal
d. Neurotransmitter - ✔✔c. Axon terminal
The nervous system:
a. Detects changes in the internal or external environment
,b. Controls the movement of muscles
c. Integrates info from several sources and uses it determine an appropriate response
d. all of the above - ✔✔d. all of the above
Neurons that conduct impulses from the CNS to muscles or glands are:
a. Sensory neurons
b. Interneurons
c. Motor neurons
d. Unipolar neurons - ✔✔c. Motor neurons
How many dendrites can a neuron have?
a. One
b. Two
c. Many
d. All of the above are possible dendrite numbers - ✔✔d. All of the above are possible dendrite numbers
The nervous system is in charge of:
a. Detecting changes
b. Decision-making
c. Stimulating muscles
d. All of the above - ✔✔d. All of the above
Masses of myelinated nerve fibers appear in:
,a. White matter
b. Brown matter
c. Gray matter
d. Blood vessels - ✔✔a. White matter
Every neurons has...
a. Many axons
b. A cell body
c. Myelin
d. A neurilemma - ✔✔b. A cell body
Which of the following statements about myelin is correct?
a. Myelin is released from a neuron and travels to another neuron.
b. Myelin consists of layers of lipids and proteins that wrap around an axon.
c. Myelin is produced in response to bacterial infection.
d. Myelin is a form of chromatophilic substance that fills Schwann cells. - ✔✔b. Myelin consists of layers
of lipids and proteins that wrap around an axon.
A myelinated nerve fiber is ______, whereas an unmyelinated nerve fiber is ______.
a. Gray, and composing the gray matter of the brain and spinal cord; white, and composing the white
matter of the brain and spinal cord.
, b. White, and composing the gray matter of the brain and spinal cord; gray , and composing the white
matter of the brain and spinal cord.
c. White and composing the white matter of the brain and spinal cord; gray, and composing the gray
matter of the brain and spinal cord.
d. White, and composing the gray matter of the brain and spinal cord; red, and composing the white
matter of the brain and spinal cord. - ✔✔c. White and composing the white matter of the brain and
spinal cord; gray, and composing the gray matter of the brain and spinal cord.
Myelin is rich in:
a. Nucleic acids
b. Carbohydrates
c. Lipids
d. Salts - ✔✔c. Lipids
Which of the following is a type of neuroglia?
a. Astrocyte
b. Oligodendrocyte
c. Schwann cell
d. All of the above. - ✔✔d. All of the above.
Which cells produce myelin in the brain and spinal cord?
a. Schwann cells
b. Astrocytes
c. Microglia
d. Oligodendrocytes - ✔✔d. Oligodendrocytes