Components of blood

Question 1

Plasma

Answer 1

55% of blood volume
90% water
Carry cells around body (digested food, waste)
Regulates bodies fluid content e.g. dehydrated muscles

Question 2

Red blood cells (erythrocytes)

Answer 2

99% of blood cells
Produced in bone marrow
Removed by liver and spleen after worn out in 4 months
Carry oxygen around body by a protein called haemoglobin
Carries carbon dioxide and other metabolic byproducts away from muscles

Question 3

White blood cells (leukocytes)

Answer 3

1 white = 700 red
Larger than red
Wear out after a few days
Produced in bone marrow
Fight against infection, destroys bacteria or foreign organisms

Question 4

Platelets

Answer 4

Extremely small
1 platelet = 700 red
Forms blood clots
Prevents infection and blood loss
Prevents bleeding from torn muscles