Transportation : Transportation in human beings-
(ii) Components -
(a) Fluid medium- Plasma
(b) Red blood corpuscles
(c) White blood corpuscles
(d) Platelets suspended in plasma
Note: RBC – Erythrocytes- It is disc shape and having colour pigment Haemoglobin which provide red colour. It transport oxygen to all part of body
WBC – leukocytes – It produces antibodies that protect us from disease causing micro organism.
Platelets: Thrombocytes - It help in clothing of blood
(iii) Plasma transports food, Oxygen, Carbon dioxide, Nitrogenous wastes, etc.
Functions of blood -
WBC – leukocytes – It produces antibodies that protect us from disease causing micro organism.
Platelets: Thrombocytes - It help in clothing of blood
(iii) Plasma transports food, Oxygen, Carbon dioxide, Nitrogenous wastes, etc.
Functions of blood -
(i) Transport of respiratory gases.
(ii) Transport of nutrients.
(iii) Transport of waste products.
(iv) Defence against infection
Blood vessels-
Blood vessels-
(i) Arteries
(ii) Veins
(iii) Capillaries
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