Coordination and response

Question 1

What is the central nervous system

Answer 1

brain and spinal cord

Question 2

what is the peripheral nervous system

Answer 2

all the other nerves

Question 3

what is the role of the nervous system

Answer 3

to alert the body when something is bad for you

Question 4

function of axon

Answer 4

long and thin to carry the message

Question 5

function of dendrite

Answer 5

branchs to connect the nerves

Question 6

mylein sheath

Answer 6

to insulate

Question 7

describe the events in synapse

Answer 7

The neurotransmitter diffuses from one side to the other, it is released when a nervous impulse arrives at the end of the first neurone.

Question 8

what is the diffrence between the neurones

Answer 8

sensory has its cell body in the middle, the relay is short and the motor is long

Question 9

order of a reflex arc

Answer 9

stimulus
receptor
sensory neurone
relay neurone
motor neurone
effector
response

Question 10

diffrence between a reflex and concius response

Answer 10

reflex does not carry the message all the way to your brain while concuis uses your brain

Question 11

what is a synapse

Answer 11

gap between the neurones

Question 12

what is a vesicle

Answer 12

sack that contains the nerotransmitters

Question 13

can messages travel both ways down a neruon

Answer 13

no

Question 14

5 sense organs

Answer 14

skin,nose,mouth,eyes,ears

Question 15

role of cornea

Answer 15

refracts light

Question 16

role of lens

Answer 16

focuses light on retina

Question 17

role of optic nerve

Answer 17

sends signals to brain

Question 18

roles of retina

Answer 18

detects light

Question 19

what happens to the pupil in bright light

Answer 19

it constricts

Question 20

what happnes to the pupil in dark light

Answer 20

it dilates

Question 21

why is the reflex of the iris importent

Answer 21

to control how much light eneters the eye

Question 22

what 2 mucseles are in the iris

Answer 22

cicular and radial

Question 23

how does the circular muscle adjust to bright light

Answer 23

contracts

Question 24

how does the radial mucsle adjust to bright light

Answer 24

relaxs

Question 25

how can you see a far away object

Answer 25

using accomidation (cillary mucsles slacken and suspensory ligamnets contract)

Question 26

were are the rod and cone cells

Answer 26

in the fovea

Question 27

what are the functions of the rod and cone cells

Answer 27

rod cells detect color and cone cells detect light

Question 28

Function of fovea

Answer 28

detect color

Question 29

function of the fovea

Answer 29

detects color

Question 30

what is a hormone

Answer 30

a chemical relased that affects body

Question 31

were are hormones produced

Answer 31

in the glands

Question 32

how are hormones transported

Answer 32

through blood

Question 33

list four hormone found in humans

Answer 33

adrenline, insulin and glucagon, testrone, oestrogen

Question 34

function of adrenline and were is it made

Answer 34

adrenline is produced in the adrenal gland (the bottom of back). It readys fight or flight

Question 35

function of insulin and glucagon

Answer 35

produced in the pancreas, insuline reduces blood sugar while glucagon increases blood sugar

Question 36

function of oestrogen

Answer 36

produced in the ovaries it is the main sex hormone for females

Question 37

functtion of Testrone

Answer 37

produced in the testes and it isthe main sex hormone for males

Question 38

role of gylocegen

Answer 38

a more sutible way of storeing glucose because it is non soluble

Question 39

diffrence between type one and type 2 diabetes

Answer 39

type 2 diabetes does not produce insulin while type 1 produces insulin but the liver does not react

Question 40

what is homeostatis

Answer 40

keeping the bodys internal levels stable

Question 41

what is thermoregulaion

Answer 41

keeping the body at a constant temprture

Question 42

what happens when the body gets to hot

Answer 42

1. skin and hypothalmus will detect the change 2.blood vessels become bigger, you sest and the hairs on your arm flatten

Question 43

vasodiliation

Answer 43

blood vessel become bigger

Question 44

what is vasoconstriction

Answer 44

blood vessels constrict

Question 45

how does sweating cool the body

Answer 45

when you swaet you have water on your arm and your body is hot so the sweat evaporates and takes some heat with it.

Question 46

how does shivering help heat up the body

Answer 46

your mucsles contract

Question 47

what is negtive feedback

Answer 47

when levels go futher down or futher up than usal but return to normal levels

Question 48

plant growth hormone

Answer 48

auxin

Question 49

what is tropisim

Answer 49

a reaction to a stimuli

Question 50

what exibhits negitive phototropisim

Answer 50

roots

Question 51

what exphitsts positive phototropisim

Answer 51

shoots

Question 52

what exibhits negitive gravtropisim

Answer 52

shoots

Question 53

were is auxin mainly found

Answer 53

in the tips of plant (roots or shoots)

Question 53

when light isshone on plant what happens

Answer 53

auxins got to the shaded side

Question 53

what exibhits postive gravitropisim

Answer 53

roots

Question 53

what does the auxin cause cells to do

Answer 53

elongate