N. System & Tissue Ch. 11 Pt. 1 Flashcards
1
Q
Neuroglia-Glial Cells
A
6 in CNS 2 in PNS
2
Q
Astrocytes
A
Largest/ most numerous
Star shaped
Blood-brain barrier
3
Q
Microglia
A
Smallest/ least numerous
Phagocyte
Immune system
4
Q
Epyndymal
A
Circulates cerebrospinal fluid
5
Q
Oligodendrocytes
A
Myelin sheath around CNS axon
1 surrounds many axons
6
Q
Schwann
A
Myelin sheath around PNS axons
Many Schwann cells on one axon
7
Q
Satellite
A
Surround neuron cell bodies around ganglia
8
Q
Neurons [nerve cells]
A
Long lived
Amitiotic
High metabolic rate *glucose
Plasma membrane functions in electrical signaling
9
Q
Cell body/soma
A
Neurofibrils, axon hillock (vgc)
10
Q
Clusters of cell bodies in CNS
A
Nuclei
11
Q
Clusters of cell bodies in PNS
A
Ganglia
12
Q
Dendrites
A
Receptive input region of a neuron.
Convey electrical signals toward cell body as graded potential.
