Chapter Four: The Nervous System Flashcards
1
Q
Which cells nourish neurons and form blood-brain barrier?
A
Astrocytes
2
Q
Which cells line the ventricles of the brain and produce cerebrospinal fluid?
A
Ependymal cells
3
Q
Which cells are phagocytic cells which ingest and break down waste product pathogens in the CNS?
A
Microglia
4
Q
Which cells produce myelin in the CNS?
A
Oligodendocytes
5
Q
Which cells produce myelin in the PNS?
A
Schwann cells
6
Q
What is a collection of cell bodies in the CNS called?
A
Nuclei
7
Q
What is a collection of cell bodies in the PNS called?
A
Ganglion
8
Q
What is the resting membrane potential of most neurons?
A
-70 mV
9
Q
Which direction does Na/K ATPase pump each ion?
A
K+ in and Na+ out
10
Q
Which subdivision of the PNS has two neurons? i.e., pre and post-ganglionic neurons
A
Autonomic
