Biology nervous sytem

Question 1

what is the function of the NS

Answer 1

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

Question 2

the NS is divided in

Answer 2

peripheral and central nervous system

Question 3

what is the function of the peripheral NS

Answer 3

collects the information

Question 4

what is the function of the central nervous sytem

Answer 4

process and forms a respond of the information

Question 5

how do central and peripheral NS relates

Answer 5

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.

Question 6

The peripheral NS consist of

Answer 6

supporting cells and nerves

Question 7

central NS consist of

Answer 7

brain and spinal cord

Question 8

whata re impulses

Answer 8

messages carried by the NS as eletric signals

Question 9

NS impulses are transmitted by

Answer 9

neuron

Question 10

what is the function of the neuron

Answer 10

transmits the NS impulses

Question 11

what are the types of neurons

Answer 11

sensory, motor, and interneurons

Question 12

what is the function of the sensory neuron

Answer 12

carries impulses of sensory organs

Question 13

what is the function of the motor neuron

Answer 13

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

Question 14

what is the interneurons function

Answer 14

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

Question 15

what is the neuron structure

Answer 15

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

Question 16

what is the cell body of the neuron

Answer 16

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

Question 17

what is the largest part of the neuron

Answer 17

cell body

Question 18

what is the dendrites

Answer 18

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

Question 19

what is the axon

Answer 19

long fiber, carry impulses away from the cell body

Question 20

what is the myelin sheath

Answer 20

insulating membrain tha surrounds the axon

Question 21

whar are the NS nodes

Answer 21

gaps between the myelin sheat

Question 22

what is the frunction of the node

Answer 22

impulse move from one to another

Question 23

how many minivolts has a resting neuron

Answer 23

70 minivolts

Question 24

how does a nerve impulse begins

Answer 24

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

Question 25

where does potential come from

Answer 25

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

Question 26

sodium ions

Answer 26

Na+

Question 27

potassium ions

Answer 27

K+

Question 28

What is action potential

Answer 28

is the reversal of negative changes to positive changes

Question 29

what types of reversing potentials are

Answer 29

resting and active potential

Question 30

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

Answer 30

threshold

Question 31

what is synapse

Answer 31

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

Question 32

what separates the axon terminal from the adyacent cell

Answer 32

synapse cleft

Question 33

whats is the function of the synapse cleft

Answer 33

separates the axon terminal from the adyacent cell

Question 34

what are the neurontransmitters

Answer 34

chemicals that from the impulses across the synape to another cell

Question 35

where does the procesing of information occurs

Answer 35

on the central NS

Question 36

what is the main comunication link of the NS

Answer 36

the spinal cord

Question 37

what is a reflex

Answer 37

a quick automatic respons to a stimuli

Question 38

what are major areas of the brain

Answer 38

cerebrum,cerebellum, and barin stem

Question 39

the largest region of the bran

Answer 39

cerebrum

Question 40

the cerebrum is

Answer 40

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

Question 41

the cerebrum is divided into

Answer 41

left and right hemispheres

Question 42

the hemispherre are connected by

Answer 42

the corpus collosum

Question 43

hemisphere are divided into regions called

Answer 43

lobes

Question 44

of what layers cosist the cerebrum

Answer 44

cerebral cortex, and white matter

Question 45

what is cerebral cortex

Answer 45

the outer layer of the cerebrm

Question 46

cerebral cortex consist

Answer 46

gray matter and nerve cell bodies

Question 47

what is the cerebral cortex function

Answer 47

process sense organs information and controls body movements

Question 48

what is white matter

Answer 48

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

Question 49

what is the lymbic stem

Answer 49

emotion, behaviour, memory and pleasure

Question 50

cerebellum

Answer 50

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

Question 51

function of the brain stem

Answer 51

connects the brain to the spinal cord

Question 52

what do the brain stem controls

Answer 52

regulation of blood presure, heart rate, and breathing

Question 53

at are the 3 regions of the brain stem

Answer 53

midbrain, pons, and medula oblongata

Question 54

how do drugs change the brain and lead to addiction

Answer 54

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

Question 55

the 3 major regiosn orf the brain

Answer 55

midbrain, forebrain, and hindbrain

Question 56

how does the central NS receives sensory information

Answer 56

through sensory division

Question 57

what are the sensory receptors (5)

Answer 57

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

Question 58

voluntary movements called

Answer 58

somatic (arc reflex)

Question 59

unvoluntary movement called

Answer 59

autonomatic

Question 60

examples of autonomatic

Answer 60

parasympathetic and sympathetic

Question 61

example of parasympathetc

Answer 61

rest and digest

Question 62

example of sympathetic

Answer 62

intense activity

Question 63

the largest sense organ

Answer 63

skin

Question 64

sensory division role

Answer 64

transmit impulses to the central NS

Question 65

2 parts of motor division

Answer 65

somantic and autonomatic NS