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Plasma
the liquid part of blood
Plasma Contents
90% water, 7% proteins, 3% dissolved materials that are being transported
Function of Plasma
to transport dissolved materials such as glucose, amino acids, minerals, vitamins, salts, carbon dioxide, urea, and hormones
Serum
plasma from which the clotting proteins have been removed
Erythrocyte
another name for a red blood cell
Red Blood Cells
are made in bone marrow
contain haemoglobin
carry oxygen
are broken down in the liver and spleen
Features of Red Blood Cells
have no nuclei
have no mitochondria
have a biconcave shape
Haemoglobin
is broken down to form bile
Leucocyte
another name for a white blood cell
White Blood Cells
have no definite shape
have a nucleus
are bigger than red cells but less numerous
defend the body against infection
Lymphocytes
(a category of white blood cells)
made in bone marrow
found in the lymphatic system
make antibodies
Monocytes
(a category of white blood cells)
made in bone marrow
engulf bacteria
Thrombocytes
another name for platelets
Platelets
are cell fragments
are formed in bone marrow
Function of Platelets
help to clot the blood
Human Blood Groups
O, A, B, AB
Rhesus Positive
people who have the Rhesus chemical on their red blood cells
Rhesus Negative
people who do not have the Rhesus chemical on their red blood cells
Haemoglobin
gains oxygen in the lungs, forming oxyhaemoglobin
Oxyhaemoglobin
loses oxygen to body cells, forming haemoglobin
