Control in the human body Flashcards
Many processes within the body are coordinated by what
Chemical substances such as hormones
What happens to the hormones
They are secreted by glands and are usually transported to their targets organs by the blood stream
What are hormones
Chemical messengers which travel in the blood to activate target cells
What does the pituitary gland do
Produces hormones such as FSH and LH
What do the ovaries do
Produce oestrogen and progesterone
What hormones are involved in the menstrual cycle of a woman
FSH
LH
Oestrogen
What does the FSH hormone do
Produced in the pituitary gland
Causes an egg to develop
Stimulates ovaries to produce oestrogen
What does oestrogen do
Produced in ovaries
Causes lining of uterus to repair
Stimulates LH Production and inhibits production of FSH
What does LH do
Stimulates the release of eggs from the ovary
Produced in pituitary gland
The uses of hormones in controlling fertility include what
Giving oral contraceptives that contain hormones to inhibit FSH production so that no eggs mature
IVF
Internal conditions that are controlled include?
Water content of body
Ion content of body
Temperature
Blood sugar levels
Advantages of nerves
Fast acting
Advantages of hormones
Long term affect
More general wider effect
Disadvantages of nerves
Short term effect
Disadvantages of hormones
Slow acting
