Hormones

Question 1

What is LH and what does it stimulate? And how do other hormones interact with it?

Answer 1

Luitinising hormone stimulates ovulation and is triggered by high oestrogen levels and is stopped by progesterone

Question 2

What is FSH, what hormones interact with it?

Answer 2

• FSH stimulates oestrogen,
• when oestrogen gets too high, it inhibits FSH production
• Progesterone inhibits progesterone production

Question 3

How do other hormones interact with oestrogen?

Answer 3

• stimulated by FSH
• inhibits FSH when oestrogen levels are too high
• when oestrogen levels are too high, stimulates LH production

Question 4

How does progesterone interact with other hormones?

Answer 4

• progesterone inhibits FSH and LH production

Question 5

What are the differences between the endocrine system and the nervous system?

Answer 5

• travel through blood rather than electrical impulses
• endocrine system spreads more slowly which means it’s effects last longer
• hormones act more generally rather than nervous system where nerves are sent to one specific area.

Question 6

What is the definition of a hormone?

Answer 6

Small chemical molecules that are passed into the blood and spread around the body through the bloodstream

Question 7

What is the endocrine system and what is it made up of?

Answer 7

The hormones system
- made up of glands that secrete hormones

Question 8

What hormone does the pancreas release and what is its purpose?

Answer 8

• releases insulin
• regulates blood glucose concentration

Question 9

What is the purpose of the thyroid gland and where is it in the body?

Answer 9

• produces and releases thyroxine which regulates the rate of metabolism and effects growth and development
• in the neck in the shape of a bow tie

Question 10

What is the purpose of the adrenal gland and what are its effect?

Answer 10

• releases Adrenalin
• triggers ‘fight or flight’ which increases heart rate