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Anatomy 3300 > Organization and Nervous tissue > Flashcards

Organization and Nervous tissue Flashcards

1
Q

Nervous tissue

A
  • vascular tissue comprised of 2 types of cells: neurons and neuroglia
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2
Q

Neurons

A

circuitry of the NS
highly specialized cells
no mitotic division

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3
Q

Neuroglia

A

smaller cells
greatly outnumber neurons
support nourish and protect neurons
continue to divide throughout indv life

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4
Q

Dendrites

A

receive stimuli

start depolarization of nerve

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5
Q

cell body of neuron

A

maintains cell structures and components

going to have organelles

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6
Q

axon hillock

A

concentrates action potential

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7
Q

axon

A 
propogates electrical information 
longest axon (can be one M - ex. motor)
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8
Q

axom terminal

A

prepares neurochemical release

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9
Q

synaptic bulb

A

release of communicative chem substance into synapse

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10
Q

unipolar

A

one continuous axon containing both dendrites

ex. provides info from finger tips to SC with cell body sitting really close to SC

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11
Q

bipolar

A

one concentrated set of denditres and one axon

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12
Q

multipolar

A

multiple extensions (most dendritic)
motor neurons inSC (like the M long neurons)
pryamidal neurons in cortex
purkinje

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13
Q

AtCh

A

neuromuscular junctions
ANS
cognition

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14
Q

seratonin

A

well-being, happiness, appetite, sleep

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15
Q

DA

A

motor pathways to brain, reward

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16
Q

NE + Epinephrine

A

sympathetic response
CO, respiration, vessel constiction
fight or flight mode - where energy is going

17
Q

GABA

A

inhibition of signalling (regulatory)

responsible for everything we associate with drinking

18
Q

6 types of glial cells

A

CNS - astrocytes, oligodendrocytes, microglia, ependymal cells
PNS - Shcwann cells, Satelitte Cells

19
Q

Non-myelinating glia

A

astrocytes
microglia
epenymal cells

20
Q

Astrocytes

A 
- chemical enviro 
neuronal connection promotion 
learning and mem 
strength 
create permeability in BB
21
Q

Microglia

A

phagocytosis of debris and microbes

22
Q

ependymal cells

A

CSF production

blood-CSF barrier

23
Q

Myelinating

A

oligodendrycytes
shwann
LOOKS WHITE

24
Q

Oligodendryutes

A

found in CNS - coil around many axons

25
Q

Shwann cells

A

found in PNS, only one nerve per cell

26
Q

CNS terminology of bundles

A

collection of axons = nuclei
axons travel as tracts
myelinated by oligodendricytes

27
Q

PNS term of bundles

A

collection of axons = ganglia
axons travel as nerves
myelinated by schwann cells

28
Q

White matter

A

myelinated axons

highways of info - info being sent through

29
Q

Grey matter

A

unmyelinated structures
cell bodies, dendrites, and glial cells
factories of production

Anatomy 3300 (7 decks)

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