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Flashcards in CNS.PNS. Deck (12):
1

What are the 2 parts to the CNS

1. Brain
2. Spinal Cord

2

Name the parts of the PNS

1. Somatic
2. Autonomic (Parasympatthetic/Sympathetic)

3

Define the Axon Hillock (AH)

(AH) - the final site where membrane potentials propagated from synaptic inputs summated before being transmitted to the axon. (Where the cell body and axon meet)

4

What are dendrites?

Dendrites are the principal signal reception and processing sites on neurons

5

Define an Axon

Axons conduct action potentials from cell body to synaptic terminal. Allow for RAPID communication

6

Name the 4 types of CNS Glial Cells

1. Astrocytes (Most abundant)
2. Ependymal
3. Microglia
4. Oligodendrocytes

7

Define an astrocyte

MOst abundant glial cell in CNS, Star chaped, uptake of transmitters and K+

8

Define a Microglia

Rare, but common in injury sites/neurodegredation

9

Define an Ependymal cell

Line the ventricles of the cerebrum.

10

Define an Oligodendrocyte

Provide the myelin sheath in the CNS, allows for rapid transmission

11

What are the Glial cells in the PNS

Schwann cells, surround PNS

12

Grey vs white matter

Grey: cell bodies
White: Axons