Tag: wbc
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HUMAN DEFENCE MECHANISM
To build up the body & to fight against pathogens or foreign bodies, a defence mechanism is required. There are 3 lines of defence. 1st line of defence 2nd line of defence 3rd line of defence The defense mechanism is of two types: Non specific Specific NON SPECIFIC The non specific defense system deals with…
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HEMATOPOIETIC STEM CELL
All blood cells arises from a type of stem cell called Hematopoietic Stem Cell (HSC) and the process is called haematopoiesis. HSCs are pluripotent. Stem cells are self renewing. Stem cell maintain their population by cell division. Location : Bone Marrow PROGENITOR CELLS – DIFFERENTIATE INTO SPECIFIC CELL TYPES BUT HAVE LOST THE ABILITY TO…
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Class – 9th : Connective Tissue – Blood
FLUID MATRIX: PLASMA FUNCTIONS OF BLOOD: Blood flows and transports: Gases Digested food Hormones Waste materials to different parts of the body. Blood carries oxygen as oxyhaemoglobin with the help of RBC.