Definitions

Question 1

Circulatory system

Answer 1

A system of blood vessels with a pump and valves to ensure a one way flow of blood

Question 2

Single circulatory system

Answer 2

A circulatory system where the blood only passes through the circuit once to carry oxygen, and goes from heart to gas exchange organ to rest of body

Question 3

Double circulatory system

Answer 3

A circulatory system where the blood passes twice through the heart twice on a single journey. It goes from heart to gas exchange organ back to heart and to rest of body.

Question 4

Pathogen

Answer 4

Disease-causing microorganism

Question 5

Transmissible disease

Answer 5

A disease in which the pathogen can be transmissible from one host to another through direct contact (ex: body fluids, blood) or indirectly (ex : through contaminated surfaces, water)

Question 6

Active immunity

Answer 6

The long-term defence against a pathogen by the production of antibodies in the body.

Question 7

Passive immunity

Answer 7

The short-term defence against a pathogen from antibodies acquired from another individual ex: mother to infant

Question 8

Type 1 diabete

Answer 8

Autoimmune Disease caused by the immune system targeting and destroying its own body cells