Hormones

Question 1

What are hormones

Answer 1

Chemicals released into the blood

Produced in the endocrine glands

Carried to target organs

Question 2

Adrenal glands

Answer 2

Release adrenaline

Activate a process that increase the supply of oxygen and glucose to cells

Question 3

Process of adrenaline in heart

Answer 3

Receptors

Heart muscles contract

Heart rate and blood pressure increases

Increases blood flow to muscles so cells receive more oxygen and glucose needed to respire more

Question 4

Process of adrenaline in liver

Answer 4

Receptors

Causes glycogen to stores in the liver to break down and release glucose

Increases the blood glucose levels

More glucose is transported to cells

Question 5

What does the pancreas release

Answer 5

Insulin

To regulate blood glucose levels

Question 6

What does the Thyroid gland produce

Answer 6

Thyroxine

Which helps to regulate heart rate, metabolism and tempreture

Question 7

Negative feedback

What happens when Blood thyroxine levels are low

Answer 7

The hypothalamus is stimulates and releases TRH

Question 8

What does TRH stimulate

Negative feedback

Answer 8

The pituitary glands release TSH

Question 9

What does TSH stimulate

Answer 9

The thyroid gland to release thyroxine so the thyroxine blood levels rise back to normal

Question 10

What happens when blood thyroxine levels are too high

Answer 10

TRH in the hypothalamus is stopped

Which reduces the production of TSH

So blood thyroxine levels fall