Biology Paper 2 Flashcards
Where is the pituitary gland
Brain
Where is the Thyroid gland
Neck
Where is the adrenal gland
Kidneys
Testes produce…
Testosterone
Ovaries produce
Oestrogen
Which do each one of these produce
Pancreas
Adrenal gland
Thyroid
Pituitary
Pancreas insulin
Adrenal gland adrenaline
Thyroid thyroxine regulating metabolism
Pituitary fsh lh
What Is the cause for type one diabetes
The pancreas doesn’t work properly
What is the cause for type two diabetes
Cells are insensitive to insulin
What are the symptoms of both types of diabetes
Loss of weight increased need to urinate thirsty blurry vision fatigue
What is the treatment for type one diabetes
Insulin injections
What is the treatment for type two diabetes
Controlling diet and exercise
What is the job of follicle stimulating hormone
To have An egg mature in the ovary
What is the job of the luteinising hormone
The job is to release the egg/Ovulation
What are the advantages and disadvantages of IVF
Advantages:
you get a baby
Disadvantages:
you have to take a large number of drugs for a long time these have horrible side-effects
plus the daily injections which can leave a bruised
There are long consequences IVF can lead you to get cancer
Expensive
Doesn’t always work (40% rate)
What are organic compounds
Organic compounds are compounds that have carbon in it
What is the job of oestrogen And progesterone
Oestrogen and progesterone are involved in maintaining the uterus lining in case the egg is fertilised and implants
What is the process of your period
In the first stage FSH is released by the pituitary gland
FSH travels in the blood to the ovaries where it causes an egg to mature
FSH triggers the ovaries to make oestrogen
Oestrogen cause is the lining of the uterus to become thick
Oestrogen also stops the pituitary gland from releasing FSH
Instead the pituitary gland now releases LH
LH triggers ovulation in other words the mature egg is released
Once the ovary has released its egg the ovary now produces the hormone progesterone
This prevents any more eggs from being
Released
Progesterone keeps the lining of the uterus thick in case a fertilised egg implants
If fertilisation does not take place then the level of progesterone Falls
The uterus lining and the egg release and a woman has a period
What does progesterone do in the period
Progesterone stops the pituitary gland from releasing FSH and LH