Презентация "Systems of the Human Body"
Описание презентации по отдельным слайдам:
The skeletal system consists of the bones of the body and ligaments and cartilages, which joint them. The chief function of the skeletal system is structural. The muscular system consists of the skeletal muscles and their associated structures. The main function of this system is to move us about. The nervous system consist of the brain and spinal-cord, nerves , ganglia and receptors. It is a complex information system with all the necessary means for receiving, processing , and communicating information.
Circulatory system The circulatory system consists of the heart and the blood vessels and blood , which is pumped through the blood vessels by the heart. Its function is chiefly that of transportation system :the nutrients ,oxygen , and special substances which are reguired 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 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 The urinary system consists of two 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; and the urethra through which the urine is discharged.
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