4.5 Hormones and infertiity and negative feedback - higher only Flashcards
Which 2 hormones do some woman have low levels of that lead to infertility?
FSH and LH
The first treatment for infertility is….
Injections of FSH and LH
If FSH /LH injections don’t work, which procedure due so some women undergo?
IVF
The first step of IVF is…
Injections with FSH/LH
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
What ethical issues surround IVF
Some people disagree (religious/moral reasons) that the unused embryos are discarded or used in research
What is meant by ‘gestation’?
The time between fertilisation and birth
What hormone does the Thyroid gland produce?
Thyroxine
What is the job of thyroxine?
Controls…
- How quickly your body uses energy (metabolic rate)
- How quickly it makes proteins and
- How sensitive it is to other hormones
a) What is TSH and b) where is it produced?
a) Thyroid stimulating hormone
b) Pituitary Gland
What does TSH stimulate?
The release of thyroxine from the thyroid gland
If you do not have enough iodine in your diet, you make less….?……
Thyroxine
If you do not produce enough thyroxine, how does your body respond?
Pituitary gland produces more TSH
What causes a goitre in your neck?
Your pituitary gland producing more TSH, trying to make the thyroid (in neck) produce more thyroxine
What is the effect of adrenaline?
Fight or Flight response
