Composition of blood

Question 1

White cells

Answer 1

defend the body against disease - done by attacking germs + repairing damage

Question 2

Platelets

Answer 2

function is to stop bleeding - done by blocking cut blood vessels + producing substances which help the blood to clot

Question 3

Red blood cells

Answer 3

contain pigment haemoglobin giving it its red colour, main function is to carry oxygen to the body

Question 4

Plasma

Answer 4

straw coloured liwuid + consists of mainly water + plasma proteins
carries digested food to body cells + waste products away to kidneys

Question 5

In the kidneys

Answer 5

waste products filter out of the plasma to form urine, which is stored in the bladder until discharged.

Question 6

Waste gas carbon dioxide

Answer 6

from the body cells is also carried in plasma to the lungs

Question 7

Plasma 2.0

Answer 7

special glands control certain importnat processess, by producing hormones which are carried in plasma. plasma also contains antibodies + antitoxins formed from plasma proteins called globulins

Question 8

Plasma with platelets

Answer 8

takes part in blood clotting process to stop bleeding - involves a plasma protein called fibrinogen + other things

Question 9

Composition

Answer 9

plasma 55%, leukocytes + platelets 1%, erythrocytes 45%