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Examenes 3 parcial > Biology nervous sytem > Flashcards

Biology nervous sytem Flashcards

1
Q

what is the function of the NS

A

collects information about the bodys the internal and external enviorment, proceses the information and respond to it

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2
Q

the NS is divided in

A

peripheral and central nervous system

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3
Q

what is the function of the peripheral NS

A

collects the information

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4
Q

what is the function of the central nervous sytem

A

process and forms a respond of the information

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5
Q

how do central and peripheral NS relates

A

pheripheral NS gathers information and send it to the central NS where it process the information and form a respond. And pheripheral NScarries the respond to tha glands and muscles.

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6
Q

The peripheral NS consist of

A

supporting cells and nerves

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7
Q

central NS consist of

A

brain and spinal cord

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8
Q

whata re impulses

A

messages carried by the NS as eletric signals

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9
Q

NS impulses are transmitted by

A

neuron

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10
Q

what is the function of the neuron

A

transmits the NS impulses

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11
Q

what are the types of neurons

A

sensory, motor, and interneurons

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12
Q

what is the function of the sensory neuron

A

carries impulses of sensory organs

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13
Q

what is the function of the motor neuron

A

carry the brains and spinal cord impulses to the glands and mucles

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14
Q

what is the interneurons function

A

process the information of the sensory neurons and send commandsto the motor neurons or other interneurons

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15
Q

what is the neuron structure

A

cell body, dendrites, axon, nodes, myelin sheath, and axon terminals

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16
Q

what is the cell body of the neuron

A

is the largest part of the neuron, contains nucleus nd cytoplasm

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17
Q

what is the largest part of the neuron

A

cell body

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18
Q

what is the dendrites

A

spread out of the cell boy, and carry impulses from other neurons to the cell body

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19
Q

what is the axon

A

long fiber, carry impulses away from the cell body

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20
Q

what is the myelin sheath

A

insulating membrain tha surrounds the axon

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21
Q

whar are the NS nodes

A

gaps between the myelin sheat

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22
Q

what is the frunction of the node

A

impulse move from one to another

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23
Q

how many minivolts has a resting neuron

A

70 minivolts

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24
Q

how does a nerve impulse begins

A

when a neuron is stimulated by another neuron or the enviorment. The axon carrus the impulse away from the cell body all toward the axon termals

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25
Q

where does potential come from

A

the active trabsport proteints pumps sodium ionns out of the cell and potassium ions in.

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26
Q

sodium ions

A

Na+

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27
Q

potassium ions

A

K+

28
Q

What is action potential

A

is the reversal of negative changes to positive changes

29
Q

what types of reversing potentials are

A

resting and active potential

30
Q

what s the minimun level of stimuli required to cause an impulse is

A

threshold

31
Q

what is synapse

A

is the point in which the neuron transmit the impulse to another cell

32
Q

what separates the axon terminal from the adyacent cell

A

synapse cleft

33
Q

whats is the function of the synapse cleft

A

separates the axon terminal from the adyacent cell

34
Q

what are the neurontransmitters

A

chemicals that from the impulses across the synape to another cell

35
Q

where does the procesing of information occurs

A

on the central NS

36
Q

what is the main comunication link of the NS

A

the spinal cord

37
Q

what is a reflex

A

a quick automatic respons to a stimuli

38
Q

what are major areas of the brain

A

cerebrum,cerebellum, and barin stem

39
Q

the largest region of the bran

A

cerebrum

40
Q

the cerebrum is

A

responsable of voluntary activities and site of intelligence, learning, and judgment

41
Q

the cerebrum is divided into

A

left and right hemispheres

42
Q

the hemispherre are connected by

A

the corpus collosum

43
Q

hemisphere are divided into regions called

A

lobes

44
Q

of what layers cosist the cerebrum

A

cerebral cortex, and white matter

45
Q

what is cerebral cortex

A

the outer layer of the cerebrm

46
Q

cerebral cortex consist

A

gray matter and nerve cell bodies

47
Q

what is the cerebral cortex function

A

process sense organs information and controls body movements

48
Q

what is white matter

A

the inner layer of the cerebrum with bundles of axons with the myelin sheath

49
Q

what is the lymbic stem

A

emotion, behaviour, memory and pleasure

50
Q

cerebellum

A

the 2 largest region, information of the muscle and joint position are send to it

51
Q

function of the brain stem

A

connects the brain to the spinal cord

52
Q

what do the brain stem controls

A

regulation of blood presure, heart rate, and breathing

53
Q

at are the 3 regions of the brain stem

A

midbrain, pons, and medula oblongata

54
Q

how do drugs change the brain and lead to addiction

A

reduces the number of receptors for the neurotransmitters and daily activities no loger produce pressure

55
Q

the 3 major regiosn orf the brain

A

midbrain, forebrain, and hindbrain

56
Q

how does the central NS receives sensory information

A

through sensory division

57
Q

what are the sensory receptors (5)

A

1- chemireceptor
2-photoreceptor-
3- mechanoriceptor
4-thermoreceptor
5-pain receptor

58
Q

voluntary movements called

A

somatic (arc reflex)

59
Q

unvoluntary movement called

A

autonomatic

60
Q

examples of autonomatic

A

parasympathetic and sympathetic

61
Q

example of parasympathetc

A

rest and digest

62
Q

example of sympathetic

A

intense activity

63
Q

the largest sense organ

A

skin

64
Q

sensory division role

A

transmit impulses to the central NS

65
Q

2 parts of motor division

A

somantic and autonomatic NS

Examenes 3 parcial (3 decks)

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