Genesis of bioelectricity:- Human body is composed of billions of cells. The cell is the structural and functional unit of all living organism. The group of cells having similar structures and function is called tissue.

CELL STRUCTURE AND FUNCTIONS:-  If a section of tissue is cut and studied under a microscope, it is observed that a cell is usually rounded structure, about 20 micron in diameter and is composed of:

1. cell membrane of cellular boundary
2. cytoplasm 
3. nucleus

(1) Cell Membrane:- The cuter covering of the cell is bounded by a cell wall which is made up of a chemical substance called cellulose. The cell wall is responsible maintaining the shape of the cell and at the same time offers rigidity. The cell wall regulates entry and exit of certain substance. Therefore, it is called "selectively",membrane. Its main function is to help in generation of bio-electricity.

(2) Cytoplasm:- The cytoplasm is a viscous fluid bounded by the cell membrane. It contains nucleus and other structures which are in nature and in a living cell, constant movement of the cytoplasm is seen, constant movement of the cytoplasm is seen. Various fine granules are seen in it which are reserve food materials. The other structures observed in the cytoplasm, are as under:-

      •  Mitochondria:- These are rod or dot shaped bodies. The mitochondria are the sites of cellular respiration. During this process, the energy is released. For this reason, these are called the "Power house" of the cell. The molecular oxygen is used for oxidation of essential food stuffs and formation of CO2, the metabolic energy so released is used for synthesis.

      • Vacuoles:- It  is a round transparent body. It is filled with a clear fluid. It is responsible to regulate the internal and external pressure of the cells. It may contain preserved food material and waste products.

      • Microsomes:- These are smaller than mitochondria. They are rich in lipids and proteins and contain more than half of  total Ribouncleic Acid (RNA) of the cell. It is form these RNA particles that the process of protein synthesis with in the cell are regulated.

      • Centrosome:- It is found only in animal cells near the nucleus. It consists of a rod like structure in a circle, called centriole. It is found to be participating during cell division.

      • Golgi Complex:- These structure are present near the nucleus. These structures are more prominent in cells which are secretary (filter like) in nature.  

              (3) Nuclues:-  It is the  inner control unit which has got its own membrane called nuclear membrane. It is filled whit a substance called nucleoplasm. There may be present one or more denser rounded structure called nucleolie anywhere in the nucleus. There are chromosomes which are 46 in number and are the carrier of heriditary character. The chromosomes help in cell division. The major chamical components of chromosome are DNA (Deoxyri bonucleic Acid) molecules. certa protein molecules and very little RNA.

              (4) Cell shape and size:- The shape of a cell depends upon the function it performs. A living animal cell when dissociated from the body immediately becomes round. The shape of these cells changes later on according to its position and function. The transformation of the shape of a cell is called differentiation of cells. The cells which line the surface of different organs are flat, the secretory cells are pillar like, muscle cells are spindle shaped and nerve cells are long and net like.

              All multicellular animals begin life as a single cell. This cell grows and divide to form the large number of cells which constitute the adult body.


              Genesis of bioelectricity:- Human body is composed of billions of cells. The cell is the structural and functional unit of all living organism. The group of cells having similar structures and function is called tissue.

              CELL STRUCTURE AND FUNCTIONS:-  If a section of tissue is cut and studied under a microscope, it is observed that a cell is usually rounded structure, about 20 micron in diameter and is composed of:

              1. cell membrane of cellular boundary
              2. cytoplasm 
              3. nucleus

              (1) Cell Membrane:- The cuter covering of the cell is bounded by a cell wall which is made up of a chemical substance called cellulose. The cell wall is responsible maintaining the shape of the cell and at the same time offers rigidity. The cell wall regulates entry and exit of certain substance. Therefore, it is called "selectively",membrane. Its main function is to help in generation of bio-electricity.

              (2) Cytoplasm:- The cytoplasm is a viscous fluid bounded by the cell membrane. It contains nucleus and other structures which are in nature and in a living cell, constant movement of the cytoplasm is seen, constant movement of the cytoplasm is seen. Various fine granules are seen in it which are reserve food materials. The other structures observed in the cytoplasm, are as under:-

                  •  Mitochondria:- These are rod or dot shaped bodies. The mitochondria are the sites of cellular respiration. During this process, the energy is released. For this reason, these are called the "Power house" of the cell. The molecular oxygen is used for oxidation of essential food stuffs and formation of CO2, the metabolic energy so released is used for synthesis.

                  • Vacuoles:- It  is a round transparent body. It is filled with a clear fluid. It is responsible to regulate the internal and external pressure of the cells. It may contain preserved food material and waste products.

                  • Microsomes:- These are smaller than mitochondria. They are rich in lipids and proteins and contain more than half of  total Ribouncleic Acid (RNA) of the cell. It is form these RNA particles that the process of protein synthesis with in the cell are regulated.

                  • Centrosome:- It is found only in animal cells near the nucleus. It consists of a rod like structure in a circle, called centriole. It is found to be participating during cell division.

                  • Golgi Complex:- These structure are present near the nucleus. These structures are more prominent in cells which are secretary (filter like) in nature.  

                          (3) Nuclues:-  It is the  inner control unit which has got its own membrane called nuclear membrane. It is filled whit a substance called nucleoplasm. There may be present one or more denser rounded structure called nucleolie anywhere in the nucleus. There are chromosomes which are 46 in number and are the carrier of heriditary character. The chromosomes help in cell division. The major chamical components of chromosome are DNA (Deoxyri bonucleic Acid) molecules. certa protein molecules and very little RNA.

                          (4) Cell shape and size:- The shape of a cell depends upon the function it performs. A living animal cell when dissociated from the body immediately becomes round. The shape of these cells changes later on according to its position and function. The transformation of the shape of a cell is called differentiation of cells. The cells which line the surface of different organs are flat, the secretory cells are pillar like, muscle cells are spindle shaped and nerve cells are long and net like.

                          All multicellular animals begin life as a single cell. This cell grows and divide to form the large number of cells which constitute the adult body.


                          Genesis of bioelectricity:- Human body is composed of billions of cells. The cell is the structural and functional unit of all living organism. The group of cells having similar structures and function is called tissue.

                          CELL STRUCTURE AND FUNCTIONS:-  If a section of tissue is cut and studied under a microscope, it is observed that a cell is usually rounded structure, about 20 micron in diameter and is composed of:

                          1. cell membrane of cellular boundary
                          2. cytoplasm 
                          3. nucleus

                          (1) Cell Membrane:- The cuter covering of the cell is bounded by a cell wall which is made up of a chemical substance called cellulose. The cell wall is responsible maintaining the shape of the cell and at the same time offers rigidity. The cell wall regulates entry and exit of certain substance. Therefore, it is called "selectively",membrane. Its main function is to help in generation of bio-electricity.

                          (2) Cytoplasm:- The cytoplasm is a viscous fluid bounded by the cell membrane. It contains nucleus and other structures which are in nature and in a living cell, constant movement of the cytoplasm is seen, constant movement of the cytoplasm is seen. Various fine granules are seen in it which are reserve food materials. The other structures observed in the cytoplasm, are as under:-

                              •  Mitochondria:- These are rod or dot shaped bodies. The mitochondria are the sites of cellular respiration. During this process, the energy is released. For this reason, these are called the "Power house" of the cell. The molecular oxygen is used for oxidation of essential food stuffs and formation of CO2, the metabolic energy so released is used for synthesis.

                              • Vacuoles:- It  is a round transparent body. It is filled with a clear fluid. It is responsible to regulate the internal and external pressure of the cells. It may contain preserved food material and waste products.

                              • Microsomes:- These are smaller than mitochondria. They are rich in lipids and proteins and contain more than half of  total Ribouncleic Acid (RNA) of the cell. It is form these RNA particles that the process of protein synthesis with in the cell are regulated.

                              • Centrosome:- It is found only in animal cells near the nucleus. It consists of a rod like structure in a circle, called centriole. It is found to be participating during cell division.

                              • Golgi Complex:- These structure are present near the nucleus. These structures are more prominent in cells which are secretary (filter like) in nature.  

                                      (3) Nuclues:-  It is the  inner control unit which has got its own membrane called nuclear membrane. It is filled whit a substance called nucleoplasm. There may be present one or more denser rounded structure called nucleolie anywhere in the nucleus. There are chromosomes which are 46 in number and are the carrier of heriditary character. The chromosomes help in cell division. The major chamical components of chromosome are DNA (Deoxyri bonucleic Acid) molecules. certa protein molecules and very little RNA.

                                      (4) Cell shape and size:- The shape of a cell depends upon the function it performs. A living animal cell when dissociated from the body immediately becomes round. The shape of these cells changes later on according to its position and function. The transformation of the shape of a cell is called differentiation of cells. The cells which line the surface of different organs are flat, the secretory cells are pillar like, muscle cells are spindle shaped and nerve cells are long and net like.

                                      All multicellular animals begin life as a single cell. This cell grows and divide to form the large number of cells which constitute the adult body.