Types of cells in the body class 8

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TYPES OF CELLS IN THE BODY Submitted by, RESHMA. M.S. B.Ed. Natural Science CandidateCode: 18114386012 St. Thomas Training College Mukkolakkal

Transcript of Types of cells in the body class 8

Page 1: Types of cells in the body class 8

TYPES OF CELLS IN

THE BODYSubmitted by,RESHMA. M.S.B.Ed. Natural ScienceCandidateCode: 18114386012St. Thomas Training CollegeMukkolakkal

 

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CELLS…

Human body has a number of cells

A group of different types of cells form tissues

Cells are the basic unit of any tissue, it decides the type , nature & functions of the tissues

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DIFFERENT TYPES OF CELLS

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NERVE CELLS

They never multiply in one’s life time

They are present all over the body and are sometimes as long as few metres

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NERVE CELLS…

They are human brain cells and are found in brain and the spinal cord and form the nervous tissue

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EPITHELIAL CELLS These cells are very

simple cells which form covering of other cells

These cells form covering layers of all organs and hence are present in skin , scalp, respiratory tract, etc..

Eg: skin cells, mucous cells

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BLOOD CELLSBlood cells carry oxygen to the body’s tissues and collect carbon dioxide. They also carry hormones, enzymes, and vitamins to different parts of the body.

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BLOOD CELLS They are always

motile and never stay in one pace

They have limited life span and they never multiply to form new cells

Instead new cells are formed from other cells

red blood cell

white blood cell

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MUSCLE CELLS Muscle cells comprise the three different

types of muscles: skeletal, cardiac, and smooth types. These cells are shaped differently and enable these muscles to help our bodies function properly.

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MUSCLE CELLS These cells are of muscle tissue, mostly long, large and have the ability to contract and relax, providing movements

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CELL DIFFERENTIATION The human body is

made up of many specialised cells that perform specific functions.

Specialised cells arise from the differentiation of unspecialised cells during embryological development.

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THE END


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