Hormones Flashcards
(27 cards)
How are hormones carried?
They are carried in the blood plasma
What kind of effect to hormones have?
Long lasting effects
Is a hormones message slow or fast?
Slow
Do hormones act for a long or short time?
Long time
Do hormones act in a precise are or a general area?
A general area
Do hormones carry a chemical message or electrical message?
Chemical
What are hormones?
Chemicals messengers that travel in the blood to activate target cells
What is the sex hormone released in men?
Testosterone
What is the sex hormone released in women?
Oestrogen
What is the role of FSH (follicle stimulating hormone)
It causes egg development in the ovaries and stimulates the ovaries to produce oestrogen.
Where is FSH made?
In the pituitary gland
What is the role of LH?
It stimulates the release of an egg on day 14
Where is LH produced?
In the pituitary gland
What is the role of oestrogen?
It causes the uterus lining to thicken and stimulates the production of LH
Where is oestrogen produced?
In the ovaries
What is the role of progesterone?
Maintains the lining of the uterus if the level of progesterone falls then the lining breaks.
Where is progesterone produced?
In the ovaries
What four conditions need to be controlled in the human body?
Water
Ions
Temperature
Blood sugar
What is the role of FSH? (2 MARKS)
Causes egg maturity in ovaries
Stimulates the ovaries to produce oestrogen
Why is FSH and LH given as a fertility drug?
So it can stimulate the eggs to mature
How does IVF happen? (4 marks)
- Eggs are collected from the mother
- They get fertilised by the dads sperm
- Fertilised eggs mature into embryos
- When they become a tiny ball of cells they are inserted into the woman’s uterus/womb
What are the three things plants are sensitive to?
Light
Moisture
Gravity
What grows towards the light and away from gravity?
Shoots
What grow towards the moisture and in the direction of gravity?
Roots
