Blood

Question 1

Outline

Answer 1

the body contains about five litres of blood + kept at a constant temperature of 37 degrees
it consists of 3 different types of cells that float in a liquid called plasma

Question 2

Blood cells

Answer 2

are known as red cells, white cells + platelets
red cells + platelets are unique as they have no nucleus
blood cells are so small that 1 cubic mm of blood contains about five million red cells, 1000 white + 250,000 platelets

Question 3

Oxygen

Answer 3

oxygen combines with the haemoglobin of red blood cells during its journey from the lungs to the rest of the body
oxygen is release from the haemoglobin when it reaches the cells in the body that need it

Question 4

Anaemia

Answer 4

if not enough haemoglobin in red cells, a person will be short of oxygen (anaemia) people can become easily tired, breathless + have pale complexion. they will need special care during general anaesthesia