Circulatory System

Question 1

Plasma

Answer 1

Straw-coloured liquid
Made up of water and dissolved substances
Transporting dissolved substances - glucose, amino acids, carbon dioxide, urea, hormones
Canaries heat around the body

Question 2

Red blood cells

Answer 2

Transport oxygen
5 million in drop of blood
Made in bonemarrow

Question 3

White blood cells

Answer 3

Fight disease
Produces antibodies to gobble up bacteria
Made in bone marrow
8000 in drop of blood

Question 4

Platelets

Answer 4

Clot the blood
Tiny fragments of larger cells
Formed in bone marrow
250,000 in drop of blood

Question 5

Blood Vessels

Answer 5

Veins, arteries and capillaries

Question 6

Veins

Answer 6

Carry blood to heart
Thin walls
Valves
Contains valves to keep blood flowing forwards
Deoxygenated blood
Pulmonary vein carry oxygenated blood to left atrium of heart

Question 7

Arteries

Answer 7

Carry blood away from heart
Thick elastic walls
Muscles contract to push blood along
Pulmonary artery carries blood from right ventricle go lungs
No valves

Question 8

Capillaries

Answer 8

Link arteries and veins

Thin walls

Question 9

4 Chambers of Heart

Answer 9

Left atrium
Right atrium
Left ventricle
Right ventricle

Question 10

Blood is made up of

Answer 10

Plasma
Red blood cells
White blood cells
Platelets

Question 11

Pathogen

Answer 11

A disease causing micro-organisms e.g. bacteria