Heart And Blood

Question 1

What makes up the blood?

Answer 1

Water
Plasma
Platelets
Red blood cells
White blood cells

Question 2

Leukocytes

Answer 2

They are white blood cells

Question 3

Types of leukocyte

Answer 3

B- lymphocytes> produce anti bodies
T-lymphocytes> fight infections
Monocytes> destroy invading bacteri
Eosinophil> respond to infections and parasites
Basophil> present when allergic reaction happens
Neutrophil> destroy bacteria and fungi

Question 4

White blood cells

Answer 4

Help body fight infections and diseases

Question 5

Red blood cells function

Answer 5

Deliver oxygen around body
Contain haemoglobin give red colour and contain iron.
No nucleus to carry more haemoglobin

Question 6

Red blood cell structure

Answer 6

Flattened disc to maximise space for oxygen
Small and flexible to fit through vessels

Question 7

Platelets

Answer 7

Platelets stick together to clot blood
Fragment of cells with protein attached
Prevent infection

Question 8

Plasma

Answer 8

Clear pale liquid
Makes up 55% of blood
Transport hormones

Question 9

Layers of the heart wall

Answer 9

Pericardium- protective outer layer
Myocardium- middle
Endocardium-

Question 10

Double circulation

Answer 10

4 chambered heart
Separate o2 and and deoxygenated
More o2 pumped around body

Question 11

Single circulation heart

Answer 11

Quicker
2 chambered

Question 12

Blood vessels

Answer 12

Arteries- blood away from
Body
Veins- blood to a heart
Capillaries- exchange nutrients,co2, glucose

Question 13

Baroreceptors

Answer 13

Receptors in the heart that detect change in pressure in heart.
Signal to CNS.