CNS exam 1 material questions with
complete solutions
The forebrain (prosencephalon) consists of - correct answer ✔✔Telencephalon
and Diencephalon
The midbrain consists of - correct answer ✔✔Mesencephalon
The hindbrain (rhombencephalon) consists of - correct answer
✔✔Metencephalon (pons and cerebellum) and Myelencephalon (medulla)
Most common structural type of neuron - correct answer ✔✔multipolar neuron
Most common functional type of neuron - correct answer ✔✔interneuron
Centripedal fiber - correct answer ✔✔fiber of bipolar neuron that goes toward
CNS
Centrifugal fiber - correct answer ✔✔fiber of bipolar neuron that goes away from
CNS
Most common type of synapse - correct answer ✔✔Axodendritic synapse
Second most common type of synapse - correct answer ✔✔Axosomatic synapse
, Most common type of neural transmission - correct answer ✔✔Chemical
transmission
Schwann cells - correct answer ✔✔-glial cell type that myelinates axons in PNS
-entire cell wraps around the axon
Oligodendrocytes - correct answer ✔✔-glial cell type that myelinates axons in CNS
-cell processes myelinate axons, not the whole cell
-one cell can myelinate multiple axons or parts
Astrocytes - correct answer ✔✔-most numerous glial cell type
-form endothelia- blood-brain barrier
-cell processes thicken at capillaries
-helps the neuron with its metabolism
Microglia - correct answer ✔✔-glial cell that is phagocytic, acts like a WBC in CNS
-moves around, nomadic
-embryological origin is debated/unknown-- may be derived from WBCs but they
cannot cross the blood brain barrier
Ependymal cells - correct answer ✔✔-epithelioid glial cells
-pseudo-stratified ciliated columnar cells
-line the ventricles of the brain, move CSF with cilia
-thought to be stem cells, may be capable of growing new neurons
complete solutions
The forebrain (prosencephalon) consists of - correct answer ✔✔Telencephalon
and Diencephalon
The midbrain consists of - correct answer ✔✔Mesencephalon
The hindbrain (rhombencephalon) consists of - correct answer
✔✔Metencephalon (pons and cerebellum) and Myelencephalon (medulla)
Most common structural type of neuron - correct answer ✔✔multipolar neuron
Most common functional type of neuron - correct answer ✔✔interneuron
Centripedal fiber - correct answer ✔✔fiber of bipolar neuron that goes toward
CNS
Centrifugal fiber - correct answer ✔✔fiber of bipolar neuron that goes away from
CNS
Most common type of synapse - correct answer ✔✔Axodendritic synapse
Second most common type of synapse - correct answer ✔✔Axosomatic synapse
, Most common type of neural transmission - correct answer ✔✔Chemical
transmission
Schwann cells - correct answer ✔✔-glial cell type that myelinates axons in PNS
-entire cell wraps around the axon
Oligodendrocytes - correct answer ✔✔-glial cell type that myelinates axons in CNS
-cell processes myelinate axons, not the whole cell
-one cell can myelinate multiple axons or parts
Astrocytes - correct answer ✔✔-most numerous glial cell type
-form endothelia- blood-brain barrier
-cell processes thicken at capillaries
-helps the neuron with its metabolism
Microglia - correct answer ✔✔-glial cell that is phagocytic, acts like a WBC in CNS
-moves around, nomadic
-embryological origin is debated/unknown-- may be derived from WBCs but they
cannot cross the blood brain barrier
Ependymal cells - correct answer ✔✔-epithelioid glial cells
-pseudo-stratified ciliated columnar cells
-line the ventricles of the brain, move CSF with cilia
-thought to be stem cells, may be capable of growing new neurons
