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There are several main systems of the body: the skeletal, the muscular, the nervous, the circulatory, the digestive, the respiratory, the urinary, the endocrine and the reproductive systems.
The skeletal system consists of the bones of the body and ligaments and cartilages, which join them. Chief function of The the skeletal system is structural.
The muscular system consists of the skeletal muscles and their associated structures. Main function of The this system is about to move us.
The nervous system consists of the brain and spinal cord, nerves, ganglia and receptors. It is a complex It information system with all the necessary means for receiving, processing and communicating information.
The circulatory system consists of the heart and blood vessels and the blood, which is pumped through the blood vessels by the heart. Its function is mainly that of transportation system: the nutrients, oxygen, and special substances which are required by cells are carried by the blood stream; and the cellular wastes and sometimes other materials produced by the cells are carried away by the blood stream.
The digestive system consists of the alimentary canal and a number of associated glands.
The respiratory system consists of the lungs, the air passages leading to them and associated structures. Its main function is to convey oxygen to the lungs, where it can enter the blood stream and to remove carbon dioxide, which escapes from the blood into the lung spaces.
The urinary system consists of the kidneys which produce urine by removing nitrogenous and other wastes from the blood: the two ureters, which convey the urine away from the kidneys; the urinary bladder, where the urine is stored until it is discharged; through the urethra and the urine which is discharged.
The endocrine system consists of a number of glands throughout the
body, which produce regulatory substances called hormones. Endocrine system The
serves to regulate a large number of activities
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