hormones

Question 1

what is a hormone?

Answer 1

a chemical which is secreted in the glands that travels in the bloodstream to target organs and cells which change the conditions which cause long lasting affects

Question 2

what are the differences between a hormone and a nerve?

Answer 2

hormone: nerve:
slow fast
last a long time lasts a short time
affects a precise area

Question 3

what are the glands that you need to know?

Answer 3

pituitary
thyroid
testes
ovaries
adrenal
pancreases

Question 4

which gland is a master gland?

Answer 4

the pituitary gland

Question 5

what is a master gland?

Answer 5

a gland that sicrecitys several hormones

Question 6

what hormones do the pituitary gland secrete?

Answer 6

LJ, FSH, progesterone

Question 7

what hormone does your thyroid secrete?

Answer 7

thyroxine

Question 8

what hormone does your testes secrete?

Answer 8

testosterone

Question 9

what hormone does your ovaries secrete?

Answer 9

oestrogen

Question 10

what hormone does your adrenal secrete?

Answer 10

adrenaline

Question 11

what hormone does your pancreases secrete?

Answer 11

glycogen

insulin

Question 12

what happens when your blood sugar level is to high?

Answer 12

when there is to much glucose the pancreases monitors it and releases insulin, the insulin moves glucose into the liver, the liver converts glucose into glycogen resulting the blood glucose level to be at an optimum level

Question 13

what happens when you blood sugar level is to low?

Answer 13

when your blood sugar level is to low the pancreases monitors it and releases glucagon, the liver cells convert glycogen into glucose and the blood glucose levels increase glycogen secretion stops

Question 14

what is the functions of adrenaline?

Answer 14

increase heart rate
increase breathing rate
convert glycogen to glucose
divert blood from other organ systems
increase deliver of oxygen and glucose to brain and muscles
prepare for fight or flight response

Question 15

is adrenaline controlled by negative feedback?

Answer 15

no

Question 16

what is the function of thyroxine?

Answer 16

simulate metabolic rate
control the speed of energy release
important in growth and development

Question 17

is thyroxine controlled by negative feedback?

Answer 17

yes

Question 18

what is homeostasis?

Answer 18

maintaining a constant internal environment

Question 19

what is negative feedback?

Answer 19

a control system that responds when conditions change away from their normal and it returns the conditions back to their normal level. It is a continuous cycle that never stops

Question 20

what happens when their is low thyroxine levels?

Answer 20

when their are low thyroxine levels a change is detected by receptors in the brain and the thyroid releases more thyroxine and conditions return to normal. it is a continuous cycle

Question 21

what happens when their is not normal levels on a hormone that is controlled by negative feedback?

Answer 21

conditions in the body change from a set point
change detected by a receptor
corrective mechanisms activated
conditions return to set point
corrective mechanism switched off

Question 22

are most hormones controlled by negative feedback?

Answer 22

yes

Question 23

why is adrenaline not controlled by negative feedback?

Answer 23

no counteracting hormone

filtered out of the blood to restore resting levels

Question 24

What happens on day 1 of the menstrual cycle?

Answer 24

The lining of the womb thickens

Question 25

What happens of day 14 of the menstrual cycle?

Answer 25

The egg is released from the Overy and the thickening of the womb stops but stays thick

Question 26

What happens on day 15-22 of the menstrual cycle?

Answer 26

Fertilisation can happen

Question 27

What happens on day 23-28 of the menstrual cycle?

Answer 27

If the egg is not fertilised, thr lining will shed with the egg along with it

Question 28

What does FSH do in the menstrual cycle?

Answer 28

Matures the egg

Question 29

What does oestrogen do in the menstrual cycle?

Answer 29

Thickens the wall of the womb

Question 30

What does LH do in the menstrual cycle?

Answer 30

Releases the egg

Question 31

What does progesterone do in the menstrual cycle?

Answer 31

Maintains the womb lining

Question 32

What does FOOFOLLOP SI SI stand for?

Answer 32

fsh stimulates oestrogen oestrogen inhabits fsh oestrogen stimulates lh lh inhabits oestrogen progestogen is secreted if the egg is fertilised

Question 33

What does fsh stand For?

Answer 33

Follicle stimulating hormone

Question 34

What does lh stand for?

Answer 34

Luteinising hormone

Question 35

How does IVF treatment work?

Answer 35

If a women can not have a baby because of hormone imbalance, a doctor gives her large amount of fsh and lh to menstrate, the doctor removes the eggs after the women's cycle, the man gives sperm to the doctor, the doctor then fertilises the egg with the sperm, the doctor tham places the embryos back in the womb, the doctor than rakes the embryos for stem cell research, the embryos are then screened if it is successfull there will be a baby