The Heart/Blood

Question 1

What Makes up Blood?

Answer 1

Water
Plasma
Platelets
Red blood cells
White blood cells

Question 2

Leukocytes

Answer 2

They are white blood cells.

Role is to defend the body against disease.

Question 3

Red blood cells function

Answer 3

delivering oxygen around the body

No nucleus

Carry waste gasses and carbon dioxide

Question 4

Red Blood cell structure

Answer 4

Flattened disc shape

Small and flexible - to fit through narrow blood vessels

Question 5

Platelets

Answer 5

Fragments of cells with protein

Protects the body by clotting

Question 6

Plasma

Answer 6

A pale straw coloured liquid

Makes up the fluid section of blood

Makes up 55% of blood composition

Question 7

Layers of the heart wall

Answer 7

Pericardium
- protective outer layer

Myocardium
- specialised muscle

Endocardium
- smooth inner lining

Question 8

Double circulation

Answer 8

4 chambered heart

Blood passes through heart twice

Question 9

Single circulation

Answer 9

2 chambered heart

Question 10

Advantage of double circulatory system

Answer 10

Blood passes through twice

Oxygenated/deoxygenated blood is separated

Heart pumps blood at high pressure