Chapter 2

Question 1

3 main types of glial cells

Answer 1

Astrocutes, oligodendrocytes,and micro glial

Question 2

Astrocytes

Answer 2

Modulation of communication
Nutrient transport
Supports myelin coverage
Makes up the BBB

Question 3

Oligodendrocytes

Answer 3

CNS
Makes myelin sheath
Can have 30 0-50 branches unlike Schwann cells

Question 4

Microglial

Answer 4

Makes brains immune system
Removes damaged cells
Can regenerate

Question 5

Schwann celli

Answer 5

PNS cell that makes myelin sheath

Question 6

Parts of the neuron

Answer 6

Cell body, dendrites, axon, presynaptic terminals

Question 7

Cell body (soma)

Answer 7

Contain the nuclei and other sorganelles
Structures suspended in cytoplasm;a salty intracellular fluid

Question 8

Whenare neurotransmitters released into the synapse?

Answer 8

When the action potential reaches the axon terminal

Question 9

What channels are open/closed when the membrane is at rest?

Answer 9

Sodium channels are closed, potassium is closed but leaking

Question 10

where does the electrical gradient pull sodium

Answer 10

inside the cell

Question 11

sodium potassium pump

Answer 11

2 K+ in, 3 Na+ out

Question 12

absolute refractory period

Question 13

relative refractory period

Question 14

passive conduction

Question 15

saltatory conduction

Question 16

chemical vs electrical synapse

Answer 16

chemical is more common, electrical is gap junction (basically the same cell)

Question 17

Peripheral nervous system is made of the…

Answer 17

somatic and autonomic

Question 18

autonomic consists of

Answer 18

sympathetic and parasympathetic

Question 19

sympathetic

Answer 19

fight or flight

Question 20

parasympathetic

Answer 20

rest or digest