4.5.3.1 Human Endocrine System Flashcards
1
Q
What is the endocrine system?
A
- the body is controlled by hormones which are released directly into the blood
2
Q
What is the endocrine system composed of?
A
- glands which secrete hormones into blood
3
Q
Where does the blood carry hormones?
A
- target organs
- they produce an effect
4
Q
What are the differences between nervous control and hormonal control?
A
- type of signal: electrical (n), chemical (h)
- transmission of signal: neurones (n), bloodstream (h)
- effectors: muscles or glands (n), target cells in tissues (h)
- type of response: muscle contraction or secretion (n), chemical change (h)
- speed of response: very rapid (n), slower (h)
- duration of response: short (n), long (h)
5
Q
What is the ‘master gland’?
A
- pituitary gland
- secretes several hormones into blood in response to body conditions
- hormones can act on other glands to stimulate release of other hormones and bring about effects
6
Q
Where is the pituitary gland and what does it produce?
A
- brain
- produces many hormones which results on other hormones releasing
7
Q
Where is the thyroid gland and what does it produce?
A
- throat
- produces thyroxine
8
Q
What does the pancreas produce?
A
- produces insulin
9
Q
Where are the adrenal glands and what does they produce?
A
- on kidneys
- produce adrenaline
10
Q
What do the ovaries produce?
A
- produce oestrogen
11
Q
What do the testes produce?
A
- testosterone
