hormones

Question 1

hormones

Answer 1

are chemical molecules released directly into the blood stream
they control things in organs and cells that need constant adjustment

Question 2

pituatury gland

Answer 2

produces hormones that regulate body conditions

act on other gland telling them when to release hormones

Question 3

ovaries

Answer 3

produce oestrogen

Question 4

thyroid

Answer 4

produces thyroxine which regulates metabolism

Question 5

adrenal glands

Answer 5

produces adrenaline

Question 6

the pancreas

Answer 6

produces insulin which is used to regulate the blood glucose level

Question 7

testies

Answer 7

produce testosterone

Question 8

Difference between nerves and hormones

Answer 8

N, fast action: short time : precise area

H, slower action: long time: general way

Question 9

H

Answer 9

s

Question 10

what happens when your glucose level is too high

Answer 10

pancreas sends insulin to the bloodstream

the liver then takes the glucose out and stores it as glycogen

Question 11

what happens when your glucose level is low

Answer 11

pancreas sends the glucagon into the blood stream

the liver sends the glucose in the blood stream

Question 12

Diabetes type 2 (causes)

Answer 12

not enough insulin is produced to maintain the blood glucose level
associated with obesity

Question 13

symtoms of diabetes

Answer 13

increased thirst
blurred vision
extreme tiredness
wight loss

Question 14

Diabetes type 1(causes)

Answer 14

body unable to produce insulin so there is no insulin to move out of the blood

Question 15

Effects of adrenaline

Answer 15

heart beat and breathing increase
pupils dilate
senses heighten
blood is directed towards your large muscles

Question 16

lh

Answer 16

triggers ovulation

Question 17

fsh

Answer 17

matures the egg

Question 18

oestrogen

Answer 18

causes the development of the lining of the uterus

Question 19

progesterone

Answer 19

maintains the lining of the uterus

Question 20

the menstrual cycle

Answer 20

1) pituitary gland produces fsh day 7 and incourages the egg to mature
2) the mature egg from the ovaries imit oestrogen
3) on day 14 the oestrogen signals to the gland to produce lh which triggers ovulation
4) 7 days later the sperm has 24 hours to fertilize while this happens progesterone maintains the womb lining

Question 21

implant dis/ads

Answer 21

works for three years, 99% effective

requires a procedure

Question 22

combined pill dis/ads

Answer 22

often reduces bleeding, may help with pre menstrual symptoms

could miss pill, vomiting

Question 23

vagianl ring dis/ads

Answer 23

lasts 3 weeks

must be comfortable

Question 24

condom dis/ads

Answer 24

best sti protection

may slip off, could be wrong shape

Question 25

diaphragm

Answer 25

can be put in at any time | right shape, add extra spermicide

Question 26

interauterine device dis/ads

Answer 26

stays for 5-10 years | period may be heavier

Question 27

process of ivf

Answer 27

1) given fsh 2) uses a needle to collect eggs 3) eggs are combined with sperm 4) are implanted back 5) grow into fetus

Question 28

what is adreniline

Answer 28

hormone released by adrenal glands

Question 29

what is thyroxine and what does it do

Answer 29

hormone released by the thyroid gland | regulates the metabolism rate

Question 30

what stimulates thyroxine

Answer 30

tsh thyroid stimulating hormones

Question 31

what happens when throxine is too high

Answer 31

receptors in hypothalamus detect increase pituitary gland inhibits tsh opposite of too low

Question 32

function of the kidneys

Answer 32

make urea by taking waste products substances filtered out of the blood as it passes the kidneys useful substances are absorbed back into blood

Question 33

what 3 three things does the kidney filter

Answer 33

water, ions and urea

Question 34

what is ADH

Answer 34

regulates water and is released by pituitary gland

Question 35

how does the kidney control water amount

Answer 35

ADH binds to the collecting duct and changes the permeability

Question 36

what is kidney faliure

Answer 36

waste products build up

Question 37

how does dialysis work

Answer 37

blood flows between partially permeable membrane surrounded by dialysis fluid the fluid has the same concentration of ions and glucose so useful ions and glucose are not lost only waste products diffuse across the blood it thinned to stop clots

Question 38

negatives of dialysis

Answer 38

clots valuable time 3-4 hours

Question 39

positives of kidney transplant

Answer 39

cheaper

Question 40

negativies of kidney transplant

Answer 40

rejected by immune system

Question 41

what is Auxin

Answer 41

hormone that controlls growth near the tips and roots of a plant in response to light and gravity extra Auxin promotes growth in shoots but not roots

Question 42

why do shoots grow towards light

Answer 42

when exposed to light, more Auxin in shade | shaded side elongates faster so bends towards light

Question 43

why do shoots grow away from gravity

Answer 43

gravity pulls Auxin on to lower side causing the lower to elongate faster bending upwards

Question 44

why do roots grow towards gravity

Answer 44

more Auxin on lower but this extra Auxin stops growth so the top elongates faster bending downwards

Question 45

what does ethene do to plants

Answer 45

stimulates enzymes that cause ripening

Question 46

what does Gibberellin stimulate

Answer 46

plant stems to grow

Question 47

how does Gibberellin controll dormancy, flowering and growing larger fruit

Answer 47

g

Question 48

what uses do Auxin have

Answer 48

killing weeds with broad leaves being used in rooting powder to grow from cuttings added to tissue cuttings