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T3- Neuro > 1. Intro to Neuro > Flashcards

Flashcards in 1. Intro to Neuro Deck (60):
1

3 fxn of the nervous system

1. take in sensory info
2. integrate info
3. tell M and glands to respond

2

Sensory receptors tranduces NRG into ____ signals

electrochemical signals

3

Sensory input enters through the _____ nervous system. It acts as a go btw from the outside to the CNS

peripheral nervous system

4

_____ acts as the bridge btw the sensory neuron and motor neuron

assoc. neuron

5

What are the 2 parts of the peripheral nervous system

somatic (skeletal M)
Autonomic (smooth M/ visceral M)

6

Myelin wraps around ____ neurons

somatic motor neurons

7

_____ motor neurons is voluntary activity.

somatic motor neurons

8

Fxn of ACh and NE

1. contraction of S.M or cardiac M
2. stim or inhibits glandular secretion

9

Name the two parts of the ANS

SP
PS

10

7 fxn of the PS ANS throughout the body

1. constricts eye
2. stim flow of siliva
3. slows heart beat
4. Constrict bronchi
5. Stim peristalsis and secretion
6. Stim release of bile
7. Contracts bladder

11

8 fxn of the SP ANS throughout the body

1. dialates eyes
2. inhibits flow of saliva
3. accelerates HR
4. Dilates bronchi
5. Inhibits peristalsis and secretion
6. converts glycogen to glucose
7. secretion of adrenaline and noradrenaline
8. inhibits bladder constriction

12

_____: help to communicate with other cells. Increase surface area and lead to the soma

dendrite

13

____: the nucleus of a neuron is housed here

soma

14

_____: Where transcription, replication, and DNA repair occurs in neurons

Nucleus (Perikaryon)

15

_____: the fatty covering of an axon

myelin sheath

16

____ is myelin in the PNS

schwann cells

- attach to a small portion of the axon
-a bunch of schwann cells make up a myelin sheath

17

one _____ cell can myelinate many axons in the CNS

oligodendrocyte

- in CNS

18

Bipolar neurons have : _____ & ___

1 major dendrite
1 axon

19

Multipolar neurons have : ___ & ___

alot of dendrite branches
1 axon

20

Pseudounipolar neurons have :

one axon : splits to go to the periphery & SC

21

Dorsal root neurons are _____polar

pseudounipolar

- one axon that splits to go to the periphery and SC

22

____cyte have vascular processes that wrap around capillaries

astrocytes

23

____ are macrophages of the brain and SC

microglial cells

24

_____ are glia cells that delivery glucose, blood brain barrier, inflam response, ATP release and glutamate recycling

astrocytes ***

25

______: are glia cells thatmyelinate axons in the CNS

oligodendrocytes

26

____: are glia cells that are immune respondants, and phagocytos

microglia

27

_____: are glia cells that help to produce and move cerebrospinal fluid through the brain . They line ventricles

ependymal cells

28

the ______ of a synpase is where vescicles are contained

active zone

29

_____ is the space that contains extracellular fluid within a synpase

synaptic cleft

30

_______: contain the neurotransmitters within the synpase in the active zone

synpatic vesicle

31

______: is where neurotransmitters are released from in the synapse

presynapse

- postsynpase is where they bind

32

_____: is where neurotransmitters bind within the synapse

postsynapse

33

________: unmyelinated axons

gray matter (CNS)

34

_______: myelinated axons

white matter (CNS)

35

_____: cell bodies clustered together in the CNS

Nuclei

36

_____: axons clustered in the CNS

tracts

37

_____: cell bodies in the PNS

ganglion

38

_____: a collection of ganglia

plexus

39

_____: axons clustered in the PNS

nerves

40

2 characteristics of a nissl body

is a ribosome
unmyelinated

41

Neurons do not conti ____

divide

(there is no mitosis after injury)

42

____: cellular organism that has enzymes that break down waste materials and cellular debris

lysosomes

43

_____: contain ribosomes and are the site for protein synthesis

Nissl body

44

____& ___: are a major component of the neuronal cytoskeleton, and are believed to function primarily to provide structural support for the axon

neurofilaments and microtubules

(act as a highway within the cell)

45

Where are vessicles secreted from within the cell?

golgi complex

46

In neurons, ______ channels in the _____ mediate vesicle binding and release of neurotransmitter

voltage-gated Ca+2 channels

in the axon terminal

47

What mediates vesicle binding and release of neurotransmitters

votage gated Ca+2 channels in the axon terminal

48

vesicles are tied to the active zones by _____

docking proteins

(actin and synaptophysin)

49

What are the docking proteins that vesicles are tied to the active zone by ?

actin and synaptophysin

50

_____ helps to withdraw vesicle components back from the synaptic cleft

clathrin

51

How do manufactured products of the neuron get from the cell body to the axon terminal

microtubules

52

Anterograded axonal transportation used the protein _____ to carry molec. from the nucleus to the periphery

kinesin

53

Retrograde axonal transpoation uses the protein ___ to carry the molec. from the periphery to the nucleus

dyensin

(tie dye is retro)

54

What type of cargo does kinesin carry through anterograde transport

synthesis of neurotransmitters and vesicles

55

what type of cargo does dyensin carry through retrograde axon tranportation

recycling of release material
growth factors

56

____ is a growth factor that helps nerves to growth and migrate through retrograde transport

Neurotrophins

57

Neurotrohins ae growth factors that help nerves to grow and migrate through ____ transport

retrograde transport

58

Neurons use ____ signals to communicate

chemical

59

in electrical synapses the cells are connected via _____

gap jxn

60

____ acts as a glue btw gap jxn

channel pores called "Connexins"