1.3 Nerve Physiology Flashcards Preview

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Flashcards in 1.3 Nerve Physiology Deck (21):
1

Specific astrocytes found in gray matter; short branching

Protoplasmic astrocytes

2

Specific astrocytes found in white matter; long thin unbranched processes

Fibrous astrocytes

3

Acts as main phagocytes in the CNS

Microglia

4

Creates myelin in the CNS

Oligodendrocytes

5

Secrets myelin in the PNSl only wraps around a single axon

Schwann cells / Neurolemmocyte

6

K+ equilibrium potential

-94 mV

7

Na+ equilibrium potential

+61 mV

8

Rough er and loose ribosomes that replenish plasma membrane proteins

Nissl bodies / Chromatophilic bodies

9

Gaps in the unmyelinated axon fiber that also helps in transmission of impulses in saltatory conduction

Nodes of Ranvier

10

Star shaped gila cells in the CNS that helps in repair and scarring process of the brain and spinal cord

Astrocytes

11

Astrocytes found in gray matter

Protoplasmic astrocytes

12

Astrocytes found in white matter

Fibrous astrocytes

13

Acts as main phagocytes in the CNS

Microglia

14

Chemical substances that affection action potential:Blocks voltage gated Na channels; from puffer fish

Tetrodotoxin

15

Chemical substances that affection action potential:Blocks voltage gated Na channels from dinoflagellates and cyanobacterium

Saxitoxin

16

Chemical substances that affection action potential:Blocks voltage gated K channels; from honeyee

Apamin

17

Chemical substances that affection action potential:Keeps Na channels form closing; form poison arrow frog

Batracho toxin

18

Chemical substances that affection action potential:Blocks K channels; from indian red scorpion

Iberio toxin

19

Trend (high-->low) of susceptibility of neurons according to: Hypoxia

BAC

20

Trend (high-->low) of susceptibility of neurons according to: Pressure

ABC

21

Trend (high-->low) of susceptibility of neurons according to: Local anesthetics

CBA