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

11B1 - 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

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

FSH and LH

2

The first treatment for infertility is....

Injections of FSH and LH

3

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

IVF

4

The first step of IVF is...

Injections with FSH/LH

5

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

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

6

What ethical issues surround IVF

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

7

What is meant by 'gestation'?

The time between fertilisation and birth

8

What hormone does the Thyroid gland produce?

Thyroxine

9

What is the job of thyroxine?

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

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

a) Thyroid stimulating hormone
b) Pituitary Gland

11

What does TSH stimulate?

The release of thyroxine from the thyroid gland

12

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

Thyroxine

13

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

Pituitary gland produces more TSH

14

What causes a goitre in your neck?

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

15

What is the effect of adrenaline?

Fight or Flight response

16

Which glands produces Adrenalin?

Adrenal (on kidneys)

17

What does adrenalin do blood glucose levels and heart rate?

Increases both