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BSCI 201 Final Exam Questions and
Answers 100% Solved
Why are neurons amitotic? - ✔✔because they do not go through mitosis
therefore they don't replicate
Do brain tumors originate from neurons or neuroglia cells? -
✔✔Neuroglia cells; because they exhibit a rapid rate of mitotic division
Biosynthetic center of the neuron - ✔✔Soma
-contains the nucleus
-connects the dendrites that bring information to the neuron and axon
Receptive Center of the neuron - ✔✔Dendrites
-receives signal from axon terminals of other neurons
Conducting region of the neuron - ✔✔Axon
-generates nerve impulses and transmits them
how many axons can each neuron have? - ✔✔each neuron has one
axon
secretory region of the neuron - ✔✔axon terminals
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
-releases neurotransmitters into the synapse
nissl body - ✔✔Rough ER in soma of neurons
ganglia - ✔✔cluster of neuron cell bodies in the PNS
Nuclei - ✔✔Cluster of neuron cell bodies in the CNS
Tract - ✔✔bundle of axons in the CNS
Nerve - ✔✔Bundle of axons in the PNS
neurilemma - ✔✔thin sheath around a nerve axon in the PNS
nodes of ranvier - ✔✔Ion flow across the membrane occurs from node to
node; area without myelin sheath
endoneurium - ✔✔the connective tissue wrapping of a single nerve fiber
Perineurium - ✔✔the outer connective tissue layer of a fascicle
Epeneurium - ✔✔the outer connective tissue layer of a group of fascicles
Supporting cells in the PNS - ✔✔-schwann cells
-satel
Supporting cells in the CNS - ✔✔-microglia
-astrocytes
-ependymal cells
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
-oligodendrocytes
microglia - ✔✔phagocytes that engulf and destroy debris and pathogens
Astrocytes - ✔✔control of the blood brain barrier (BBB) and blood flow
Ependymal cells - ✔✔cavities in the brain called ventricles are lined with
these cells
Oligodendrocytes - ✔✔cytoplasmic extensions wrap around segments of
axons to MYELINATE the axons
Blood Brain Barrier - ✔✔-Tight junctions that restrict the movement of
substances between
endothelial cells.
-Specific transport proteins determine which substances can cross the
barrier to prevent interference with the function of neurons
Schwann cells - ✔✔MYELINATE axons of neurons in the PNS
Satellite cells - ✔✔Form a halo around neuron cells bodies in a ganglion
to prevent interference from other cell bodies in the ganglion
Explain why myelinated axons in the CNS do not regenerate when severed
- ✔✔NO neurilemma to guide growth of severed axon
BSCI 201 Final Exam Questions and
Answers 100% Solved
Why are neurons amitotic? - ✔✔because they do not go through mitosis
therefore they don't replicate
Do brain tumors originate from neurons or neuroglia cells? -
✔✔Neuroglia cells; because they exhibit a rapid rate of mitotic division
Biosynthetic center of the neuron - ✔✔Soma
-contains the nucleus
-connects the dendrites that bring information to the neuron and axon
Receptive Center of the neuron - ✔✔Dendrites
-receives signal from axon terminals of other neurons
Conducting region of the neuron - ✔✔Axon
-generates nerve impulses and transmits them
how many axons can each neuron have? - ✔✔each neuron has one
axon
secretory region of the neuron - ✔✔axon terminals
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
-releases neurotransmitters into the synapse
nissl body - ✔✔Rough ER in soma of neurons
ganglia - ✔✔cluster of neuron cell bodies in the PNS
Nuclei - ✔✔Cluster of neuron cell bodies in the CNS
Tract - ✔✔bundle of axons in the CNS
Nerve - ✔✔Bundle of axons in the PNS
neurilemma - ✔✔thin sheath around a nerve axon in the PNS
nodes of ranvier - ✔✔Ion flow across the membrane occurs from node to
node; area without myelin sheath
endoneurium - ✔✔the connective tissue wrapping of a single nerve fiber
Perineurium - ✔✔the outer connective tissue layer of a fascicle
Epeneurium - ✔✔the outer connective tissue layer of a group of fascicles
Supporting cells in the PNS - ✔✔-schwann cells
-satel
Supporting cells in the CNS - ✔✔-microglia
-astrocytes
-ependymal cells
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
-oligodendrocytes
microglia - ✔✔phagocytes that engulf and destroy debris and pathogens
Astrocytes - ✔✔control of the blood brain barrier (BBB) and blood flow
Ependymal cells - ✔✔cavities in the brain called ventricles are lined with
these cells
Oligodendrocytes - ✔✔cytoplasmic extensions wrap around segments of
axons to MYELINATE the axons
Blood Brain Barrier - ✔✔-Tight junctions that restrict the movement of
substances between
endothelial cells.
-Specific transport proteins determine which substances can cross the
barrier to prevent interference with the function of neurons
Schwann cells - ✔✔MYELINATE axons of neurons in the PNS
Satellite cells - ✔✔Form a halo around neuron cells bodies in a ganglion
to prevent interference from other cell bodies in the ganglion
Explain why myelinated axons in the CNS do not regenerate when severed
- ✔✔NO neurilemma to guide growth of severed axon
