Hormones

Question 1

What are hormones?

Answer 1

Chemical molecules released directly into the blood

Question 2

Name the endocrine glands

Answer 2

• thyroid
• pituitary gland
• adrenal gland
• ovaries
• testes
• pancreas

Question 3

Compare nerves and hormones

Answer 3

• nerves are fast
• hormones are slow
• nerves act for a short time
• hormones act for a long time
• nerves are precise
• hormones act in a more general way

Question 4

What does the thyroid do?

Answer 4

Produces thyroxine

Regulates metabolism, heart rate and temperature

Question 5

Why does the ovaries do?

Answer 5

Produce oestrogen

Involved in the mensural cycle

Question 6

What do the testes do ?

Answer 6

Produce testosterone

Controls puberty and sperm production

Question 7

What does the pancreas do?

Answer 7

Produces insulin

Regulates blood sugar

Question 8

What do the adrenal gland do ?

Answer 8

Produces adrenaline

Prepares body for “fight or flight”

Question 9

What is the endocrine system composed of

Answer 9

•glands which secrete chemicals called hormones directly into the blood stream

Question 10

What does thyroxine do?

Answer 10

Regulates metabolism

Stimulates protein synthesis

Growth and development

Question 11

What does adrenaline do?

Answer 11

Increases heart rate

Increases supply of glucose and oxygen

Question 12

When is adrenaline stimulated?

Answer 12

In response to scary and stressful things