The Endocrine System and Homeostasis

Question 1

which hormone is produced by the thyroid gland?

Answer 1

thyroxine

Question 2

Which hormone controls metabolic rate?

Answer 2

thyroxine

Question 3

Which hormones are released from the pituitary gland? (6)

Answer 3

FSH, LH, Growth Hormone (STH), ADH,TSH,ACTH

Question 4

What does FSH do?

Answer 4

controls sperm/egg development

Question 5

what does LH do?

Answer 5

controls female ovulation

Question 6

what does STH do?

Answer 6

controls growth

Question 7

what does TSH do?

Answer 7

causes the thyroid gland to release thyroxine

Question 8

what does ACTH do?

Answer 8

causes the adrenal gland to release adrenaline

Question 9

what does ADH stand for and what does it do?

Answer 9

anti-diuretic hormone, controls water content of body by kidney

Question 10

What hormones are produced by the pancreas?

Answer 10

Insulin and Glucagon

Question 11

what is the name of the area in the pancreas which produces hormones?

Answer 11

The Islets of Langerhans

Question 12

What does insulin do?

Answer 12

lowers blood glucose levels

Question 13

What does glucagon do?

Answer 13

raises blood glucose levels

Question 14

which hormones are produced in the ovaries?

Answer 14

Oestrogen and Progesterone

Question 15

What does progesterone do?

Answer 15

maintains uterus lining thickness

Question 16

what does oestrogen do?

Answer 16

controls secondary female sexual characteristics

Question 17

what does testosterone do?

Answer 17

controls secondary male sexual characteristics

Question 18

in which ways does the body increase body temperature?

Answer 18

Shivering, vasoconstriction, hairs stand up

Question 19

how does shivering increase body temperature?

Answer 19

skeletal muscles contract rapidly and the person shivers, which releases energy, some of which is released as heat

Question 20

how does vasoconstriction increase body temperature?

Answer 20

blood vessels narrow
less blood flows
conserve temp

Question 21

how do hairs standing up increase body temperature?

Answer 21

nerve impulses sent to hair erector muscles which contract
raising hairs
trapping layer of insulating air

Question 22

what is body temp?

Answer 22

37 degrees celcius

Question 23

which four hormones are produced by the pituitary gland?

Answer 23

FSH,LH,Growth Hormone,ADH

Question 24

what does fsh stand for?

Answer 24

follicle stimulating hormone

Question 25

what does lh stand for?

Answer 25

luteinizing hormone

Question 26

what does thyroxine do?

Answer 26

controls metabolic rate

Question 27

where is thyroxine made?

Answer 27

thyroid gland

Question 28

where is adrenaline made?

Answer 28

adrenal gland

Question 29

what does fsh do?

Answer 29

causes the follicles in the ovaries to mature, one faster than others, causes ovaries to release oestrogen

Question 30

which hormones inhibit fsh?

Answer 30

oestrogen,progesterone

Question 31

what do follicles contain?

Answer 31

ova, immature eggs

Question 32

what does oestrogen do?

Answer 32

causes the uterus lining to build up,causes LH to be released

Question 33

why does oestrogen inhibit FSH?

Answer 33

so only one egg matures

Question 34

which hormome causes the production of LH?

Answer 34

Oestrogen

Question 35

which hormone is made when the pituitary gland detects oestrogen?

Answer 35

LH

Question 36

what does LH do?

Answer 36

causes follicle to release egg remains of the follicle produce progesterone

Question 37

how does the egg move alone the fallopian tubes?

Answer 37

It's swept along by cillia

Question 38

what does progesterone do?

Answer 38

inhibits LH, keeps uterus lining thick

Question 39

what happens if the egg is fertilised?

Answer 39

the egg embeds itself in the uterus lining and the ovaries continue releasing progesterone which triggers the changes necessary for pregnancy

Question 40

what happens if the egg isn't fertilised?

Answer 40

the follicle stops producing progesterone , menstruation starts. the drop in progesterone and oestrogen causes FSH to be released again

Question 41

what do condoms do?

Answer 41

provides a barrier to sperm so they are unable to get to the egg

Question 42

what do diaphrams do?

Answer 42

acts as a barrier in the vagina to prevent sperm from entering the uterus

Question 43

Which hormones are used in the mixed pill for contraception and why?

Answer 43

Progesterone andd oestrogen inhibit fsh production/release, so no mature egg and thicker cervical mucus to block sperm

Question 44

Which hormones is a woman given before ivf?

Answer 44

Lh+FSH

Question 45

How long are embryos allowed to develop in ivf?

Answer 45

5 days