Composition of blood

Composition of blood

  • Blood is a tissue and a fluid, that transports oxygen and nutrients around the body.

  • Blood contains a fluid called plasma.

  • Blood helps us to protect against disease.

  • Blood is pumped through blood vessels by our heart.

  • Plasma is the straw-coloured liquid, that makes up about 55% of the blood volume.

  • Red blood cells transport oxygen to the organ.

  • Red blood cells have no nucleus.

  • Red blood cells contain haemoglobin.

  • White blood cells are part of the body's immune system.

  • There are several types of white cells, called neutrophils (polymorphs), lymphocytes, eosinophils, monocytes and basophils.

  • White blood cells have a nucleus.

  • Platelets are tiny fragments of cells. they help in clotting of blood.