hormones and menstrual cycle Flashcards

1
Q

What are hormones?

A

chemical messengers used by the endocrine system

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2
Q

What is the endocrine system?

A

glands that secret hormones into the bloodstream

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3
Q

what are hormones produced by?

A

glands

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4
Q

What is the function does of the thyroxide hormone ?

A

controls bloodstream

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5
Q

What is the function does of the growth hormone ?

A

causes growth

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6
Q

What is the function does of the insulin hormone ?

A

controls the blood

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7
Q

What is the function does of the adrenaline hormone ?

A

prepares for self defence

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8
Q

What is the function does of the oestrogen hormone ?

A

sexual characteristics

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9
Q

What is the function does of the testis hormone ?

A

makes sperm

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10
Q

What do heart muscle cells do with adrenaline

A

heart muscle cells contrast more rapidly and strongly increasing heart rate and blood

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11
Q

What do liver cells do with adrenaline

A

change glycoren to glucose and release it into blood

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12
Q

What do wide blood vessels do with adrenaline?

A

increasing diameter of vessel to increase blood flow to muscle

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13
Q

What do narrow blood vessels do with adrenaline?

A

narrowing vessels to reduce blood flow to organs.

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14
Q

what is menstruation?

A

the breakdown and loss of thing lining of the uterus

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15
Q

what is puberty?

A

when the body develops to allow reproduction

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16
Q

what is the menopause?

A

when the menstrual cycle stops completely

17
Q

what is fertilisation?

A

fusing of the male and female gametes

18
Q

what is pregnancy?

A

the time during when a fertilised egg develops till birth

19
Q

what is ovulation?

A

the release of an egg from an ovary

20
Q

what is a period?

A

the ‘bleed’ that occurs during menstruation

21
Q

What is stage one of the menstrual cycle?

A

day 1-5 of the menstrual cycle when the uterus lining breaks down.

22
Q

What is stage two of the menstrual cycle?

A

day 6-12 of the menstrual cycle when the egg cells starts to mature in the ovaries

23
Q

What is stage three of the menstrual cycle?

A

day 14 when the egg cell is released from the ovaries

24
Q

What is stage four of the menstrual cycle?

A

days 16-28 when the lining continues to thicken and if there’s not a fertilised egg the cycle starts again

25
what does fsh do?
stimulates the growth and maturation of egg
26
what is LH?
ovulation
27
What does oestrogen do?
stops release of fsh, stimulates release of Lh , thickens uterus lining
28
What does progesterone do?
maintain the lining of uterus, inhibits fsh and lh release
29
What does the falling levels on oestrogen and progesterone do?
trigger menstruation
30
What are 2 barrier methods of contraception?
the pill condoms
31
How do condoms prevent fertilisation?
they work as a barrier to not let sperm reach the egg
32
How does the hormone pill prevent fertilisation?
thickens cervical mucus creating a barrier against sperm.
33
What's the name given to organs that secrete hormones?
endocrine glands