Ch. 12 Nervous System

Question 1

Most abundant Glial cells in CNS

Answer 1

Astrocytes

Question 2

Astrocytes help to form the ______________ barrier by wrapping perivascular feet around brain capillaries

Answer 2

Blood-brain

Question 3

_________ cells - line internal cavities of brain and spinal cord

Answer 3

Ependymal

Question 4

Ependymal cells are made of what type of CT

Answer 4

Ciliated simple cuboidal or simple columnar epithelial

Question 5

________ Cells form Choroid Plexus with nearby blood capillaries.

Answer 5

Ependymal

Question 6

The _____________ helps produce cerebrospinal fluid

Answer 6

Choroid plexus

Question 7

Ependymal cells have cilia to help circulate…

Answer 7

Cerebrospinal fluid

Question 8

Phagocytic cells of immune system that engulf infectious agents, and remove debris from damaged CNS tissue.

Answer 8

Microglia

Question 9

Extensions of these cells wrap around axons of neurons in the CNS, forming myelin sheaths

Answer 9

Oligodendrocytes

Question 10

What type of cell is arranged around neuronal cell bodies in a ganglion, in the PNS.
Electrically insulate and regulate the exchange of nutrients and wastes.

Answer 10

Satellite Cells

Question 11

Elongated, flat cells that form sheathe around PNS axons w/ myelin

Answer 11

Neurolemmocytes (Schwann cells)

Question 12

Process of wrapping an axon with myelin

Answer 12

Myelination

Question 13

The high _______ content of Myelin gives it a white appearance, and allows for insulation

Answer 13

Lipid

Question 14

Cells surrounding the axons w/ myelin are
___________ in PNS
___________ in CNS

Answer 14

Neurolemmocytes in PNS

Oligodendrocytes in CNS