Intro To Endocrine System

Question 1

What are hormones

Answer 1

• A hormone is a substance secreted directly into the blood by specialised cells

Hormones are present in only minute concentrations in the blood and bind specific receptors in target cells to influence cellular reactions

Question 2

Control of action at a distance

Question 3

Hormone structures

Answer 3

Steroids

Peptides

Thyroid hormones

Question 4

Where are steroid hormones synthesised from?

Answer 4

Cholestral