Endocrine system

Question 1

Endocrine system

Answer 1

One of the body’s major information systems that instructs glands to release hormones directly into the bloodstream. These hormones are carried towards target organs in the body.

Question 2

Gland

Answer 2

An organ in the body that makes hormones

Question 3

Hormone

Answer 3

Chemical substances that circulate in the bloodstream and only impact target organs. They are produced in large quantities but disappear quickly. Their effects are very powerful.

Question 4

Fight or flight response

Answer 4

The way an animal responds when stressed. The body becomes physiologically aroused in readiness to fight an aggressive or, in some cases, flee.

Question 5

Adrenaline

Answer 5

Adrenaline is a hormone that is produced by the adrenal glands which is part of the body’s stress response system. Adrenaline has a strong effect on the cells of the cardiovascular system, stimulating the heart rate, contracting blood vessels and dilating air passages.

Question 6

Sympathetic State – Adrenaline Present

Answer 6

· Increased heart rate
· Increased breathing rate
· Dilated pupils
· Inhibited digestion
· Inhibited saliva production
· Contracted rectum

Question 7

Parasympathetic State – Adrenaline Not Present

Answer 7

· Decreased heart rate · Decreased breathing rate
· Constricted pupils
· Stimulated digestion
· Stimulated saliva production
· Relaxed rectum