2. RED BLOOD CELLS
The Red Blood Cells are small circular
cells, that have no nucleus. They contain a
pigment called haemoglobin.
If you combine hemoglobin with oxygen
you will get oxyhaemoglobin, which carries
oxygen from the lungs to the heart and to
the rest of the body.
3. WHITE BLOOD CELLS
The White Blood Cells have nucleus, there
are less WBC than red blood cells.
Some of their types are:
•Lymphocytes: production of antibodies
• phagocytes: phagocytosis
They are involved in defending the body
against both infectious diseases and foreign
materials.
4. Platelets
Platelets are a natural source of growth
factors. They circulate in the blood of
mammals and are involved in
homeostasis, leading to the formation of
blood clots to stop the bleeding in injuries.
5. Plasma
Plasma is the cell's liquid. Many
substances are dissolved in the plasma
(glucose, aminoacids, urea, hormones,
salts, etc.)
It serves as the protein reserve of the
human body. It plays a vital role in
intravascular osmotic effect that keeps
electrolyte in balance form and protects
the body from infection and other blood
disorders.
6. Functions
Transport:
1.Transport of nitrogenous waste from
the liver to the kidneys.
2.Transport of oxygen from the lungs to
the tissues.
3.Transport of carbon dioxide from the
tissues to the lungs.
4. Transport of digested food from the
intestine to the tissues.
5.Transport of hormones.
6. Transport of heat
7. Functions
Clotting:
Coagulation is the process by which blood
forms clots. It is an important part of
homeostasis, the cessation of blood loss
from a damaged vessel wall is covered by a
platelet and fibrin-containing clot to stop
bleeding and begin repair of the damaged
vessel.
