4.5 Hormones and infertiity and negative feedback - higher only Flashcards Preview

SHHS - Science - AQA Biology Trilogy > 4.5 Hormones and infertiity and negative feedback - higher only > Flashcards

Flashcards in 4.5 Hormones and infertiity and negative feedback - higher only Deck (17)
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1
Q

Which 2 hormones do some woman have low levels of that lead to infertility?

A

FSH and LH

2
Q

The first treatment for infertility is….

A

Injections of FSH and LH

3
Q

If FSH /LH injections don’t work, which procedure due so some women undergo?

A

IVF

4
Q

The first step of IVF is…

A

Injections with FSH/LH

5
Q

In IVF, once the woman has produced several ova, what happens next?

A

They are removed from the woman and mixed with the man’s sperm

6
Q

What ethical issues surround IVF

A

Some people disagree (religious/moral reasons) that the unused embryos are discarded or used in research

7
Q

What is meant by ‘gestation’?

A

The time between fertilisation and birth

8
Q

What hormone does the Thyroid gland produce?

A

Thyroxine

9
Q

What is the job of thyroxine?

A

Controls…

  1. How quickly your body uses energy (metabolic rate)
  2. How quickly it makes proteins and
  3. How sensitive it is to other hormones
10
Q

a) What is TSH and b) where is it produced?

A

a) Thyroid stimulating hormone

b) Pituitary Gland

11
Q

What does TSH stimulate?

A

The release of thyroxine from the thyroid gland

12
Q

If you do not have enough iodine in your diet, you make less….?……

A

Thyroxine

13
Q

If you do not produce enough thyroxine, how does your body respond?

A

Pituitary gland produces more TSH

14
Q

What causes a goitre in your neck?

A

Your pituitary gland producing more TSH, trying to make the thyroid (in neck) produce more thyroxine

15
Q

What is the effect of adrenaline?

A

Fight or Flight response

16
Q

Which glands produces Adrenalin?

A

Adrenal (on kidneys)

17
Q

What does adrenalin do blood glucose levels and heart rate?

A

Increases both

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