Neurons and Glia Flashcards Preview

Psych 3313 > Neurons and Glia > Flashcards

Flashcards in Neurons and Glia Deck (79)
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1

Secretes chemicals into bloodstream

Neuroendocrine

2

Changes shape when inflammation is found. Becomes an ameboid

Microglia

3

Tripartite synapse

Formed by astrocytes to keep neurotransmitters in

4

Involved in myelination around axons

Oligodendrocytes and Schwann cells

5

Reduces work done by sodium-potassium pumps

myelin

6

Single elongated process with cell body off to side (sensory receptors in joints to know if movement happened)

Pseudounipolar

7

Brain and spinal cord to muscles and organs

Efferent. Motor

8

Structural support to axon

Neurofilaments

9

Connects one neuron to another in brain or spinal cord. Vast majority of neurons.

Interneuron

10

Cytoplasm, organelles, and the nucleus are found here

Cell body (Soma)

11

Two processes separated by cell body. Often sensory

Bipolar

12

Antigen presentation allows them to recognize and destroy previously seen before bacteria

Microglia

13

Blood brain barrier

way of keeping things in the blood from the brain and brain from blood

14

10-15% of all cells in the brain

Microglia

15

Contains protein molecules, receptors, channels/pumps, transporters

Neural membrane

16

Micro and macro versions of this cell

glia

17

Contains mitochondria and synaptic vesicles containing neurotransmitters

Axon terminal

18

Communicate with neurons in distant areas of the nervous system

projection neurons (very long)

19

Most of the brain mass is here but there are less neurons than glia

cerebral cortex

20

No need for ion channels under these

myelin sheath

21

Starts at the axon hillock where axon join cell body

axon

22

Sensitive to type and amount of synaptic activity

Dendritic spine

23

Gaps between myelin sheaths are called

nodes of ranvier

24

Form structural matrix for neurons. Contribute to blood brain barrier. Regulate chemicals around neurons. Form scar tissue that inhibits regrowth and connectivity

Astrocytes

25

Protoplasmic astrocytes

Thick projections with many branches. Found in gray matter

26

Provides metabolic (energy -ATP) and synthetic (protein) support

Cell body (soma)

27

Conducts action potentials

axon

28

One per many dendrites

axon

29

Secrete cerebrospinal fluid (CSF)

Ependymal cells

30

Selectively permeable. Allows polarization

Neural membrane