Click here- Nclex - Stuvia US
BSCI 201 Final Exa Complete Questions and Correct Detailed
Answers (Verified Answers)m
Why are neurons amitotic?
Ans: because they do not go through mitosis therefore they don't replicate
Do brain tumors originate from neurons or neuroglia cells?
Ans: Neuroglia cells; because they exhibit a rapid rate of mitotic division
Biosynthetic center of the neuron
Ans: Soma
-contains the nucleus
-connects the dendrites that bring information to the neuron and axon
Receptive Center of the neuron
Ans: Dendrites
-receives signal from axon terminals of other neurons
Conducting region of the neuron
Ans: Axon
-generates nerve impulses and transmits them
how many axons can each neuron have?
pg. 1
, Click here- Nclex - Stuvia US
Ans: each neuron has one axon
secretory region of the neuron
Ans: axon terminals
-releases neurotransmitters into the synapse
nissl body
Ans: Rough ER in soma of neurons
ganglia
Ans: cluster of neuron cell bodies in the PNS
Nuclei
Ans: Cluster of neuron cell bodies in the CNS
Tract
Ans: bundle of axons in the CNS
Nerve
Ans: Bundle of axons in the PNS
neurilemma
pg. 2
, Click here- Nclex - Stuvia US
Ans: thin sheath around a nerve axon in the PNS
nodes of ranvier
Ans: Ion flow across the membrane occurs from node to node; area without myelin
sheath
endoneurium
Ans: the connective tissue wrapping of a single nerve fiber
Perineurium
Ans: the outer connective tissue layer of a fascicle
Epeneurium
Ans: the outer connective tissue layer of a group of fascicles
Supporting cells in the PNS
Ans: -schwann cells
-satel
Supporting cells in the CNS
pg. 3
, Click here- Nclex - Stuvia US
Ans: -microglia
-astrocytes
-ependymal cells
-oligodendrocytes
microglia
Ans: phagocytes that engulf and destroy debris and pathogens
Astrocytes
Ans: control of the blood brain barrier (BBB) and blood flow
Ependymal cells
Ans: cavities in the brain called ventricles are lined with these cells
Oligodendrocytes
Ans: cytoplasmic extensions wrap around segments of axons to MYELINATE the
axons
Blood Brain Barrier
pg. 4
BSCI 201 Final Exa Complete Questions and Correct Detailed
Answers (Verified Answers)m
Why are neurons amitotic?
Ans: because they do not go through mitosis therefore they don't replicate
Do brain tumors originate from neurons or neuroglia cells?
Ans: Neuroglia cells; because they exhibit a rapid rate of mitotic division
Biosynthetic center of the neuron
Ans: Soma
-contains the nucleus
-connects the dendrites that bring information to the neuron and axon
Receptive Center of the neuron
Ans: Dendrites
-receives signal from axon terminals of other neurons
Conducting region of the neuron
Ans: Axon
-generates nerve impulses and transmits them
how many axons can each neuron have?
pg. 1
, Click here- Nclex - Stuvia US
Ans: each neuron has one axon
secretory region of the neuron
Ans: axon terminals
-releases neurotransmitters into the synapse
nissl body
Ans: Rough ER in soma of neurons
ganglia
Ans: cluster of neuron cell bodies in the PNS
Nuclei
Ans: Cluster of neuron cell bodies in the CNS
Tract
Ans: bundle of axons in the CNS
Nerve
Ans: Bundle of axons in the PNS
neurilemma
pg. 2
, Click here- Nclex - Stuvia US
Ans: thin sheath around a nerve axon in the PNS
nodes of ranvier
Ans: Ion flow across the membrane occurs from node to node; area without myelin
sheath
endoneurium
Ans: the connective tissue wrapping of a single nerve fiber
Perineurium
Ans: the outer connective tissue layer of a fascicle
Epeneurium
Ans: the outer connective tissue layer of a group of fascicles
Supporting cells in the PNS
Ans: -schwann cells
-satel
Supporting cells in the CNS
pg. 3
, Click here- Nclex - Stuvia US
Ans: -microglia
-astrocytes
-ependymal cells
-oligodendrocytes
microglia
Ans: phagocytes that engulf and destroy debris and pathogens
Astrocytes
Ans: control of the blood brain barrier (BBB) and blood flow
Ependymal cells
Ans: cavities in the brain called ventricles are lined with these cells
Oligodendrocytes
Ans: cytoplasmic extensions wrap around segments of axons to MYELINATE the
axons
Blood Brain Barrier
pg. 4
