Biology (NTSE/Olympiad)  

2. Tissue

Fluid Connective Tissue : (Vascular Tissue)

(iv) Fluid Connective Tissue : (Vascular Tissue)
Fluid connective tissue links the different parts of body and maintains a continuity in the body. It includes blood and lymph.
(a) Blood :
It is a fluid connective tissue.

Functions of blood :
Blood transports nutrients, hormones and vitamins to the tissues and transports excretory products from the tissues to the liver and kidney.
The red blood corpuscles (RBC’s) carry oxygen to the tissues for the oxidation of food stuff.
The white blood cells (WBC’s) fight disease either by engulfing and destroying foreign bodies or by producing antitoxins and antibodies that neutrophils and harmful effects of germs.
Granulocytes include neutorphils, eosinophils and basophils.
Agranulocytes include lymphocytes and monocytes.
Blood platelets disintegrate at the site of injury and help in the clotting of blood.
(b) Lymph:
Nature :
Lymph is a colourless fluid that has filtered out of the blood capillaries. Red blood corpuscles and some blood proteins are absent in it. In the lymph, white blood cells are found in abundance.
Functions :
Lymph transports the nutrients (oxygen, glucose) that may have filtered out of the blood capillaries back into the heart to be recirculated in the body.
It brings CO2 and nitrogenous wastes from tissue fluid to blood.


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