Blood composition

Question 1

What are erythrocytes?

Answer 1

Erythrocytes are red blood cells made in the bone marrow, that have a thin disc-like shape and are red because of haemoglobin

Question 2

What are leucocytes?

Answer 2

Leucocytes are white blood cells that are part of the body’s immune system/cells that defend the body against infections

Question 3

What are the different types of leucocytes?

Answer 3

lymphocytes, neutrophils and monocytes

Question 4

Describe the three types of leucocytes

Answer 4

lymphocytes- there are two types, B-cells that develop in the bone marrow & T-cells that develop in the thymus gland.
Neutrophils-small & fast, they are one of the first to travel to the site of infection
monocytes- largest of the white blood cell

Question 5

What are platelets?

Answer 5

Platelets are produced in the bone marrow and are fragments of larger cells

Question 6

What is plasma?

Answer 6

Plasma is a clear yellow-coloured liquid that carries platelets, red and white blood cells and proteins