systems in human organs can be called the most complex and orderly among the entire animal world.Each cell is required to perform certain functions.Similar structural formations combined in complex systems that provide normal human existence.
According to the functions performed, release nervous, respiratory, digestive, immune, sexual, urinary, musculoskeletal, circulatory system.Their work is interconnected, when you turn off one link is broken the operation of another component.
systems organs in need of constant supervision.This function is performed by the nervous system.It is divided into central and peripheral.First through nerve fibers it connects all the organs so their work is controlled.With the defeat of a certain formation in the brain sends a specific signal.It sends impulses to other organ systems, then their activity is reduced or increased, which is manifested in the increased release of hormones.Also, the brain provides the higher nervous activity - thinking, memory.It is possible thanks to the presence of specific education - bark.
human respiratory system is represented by the lungs and the air-conducting paths, which include the larynx, bronchi, trachea.It delivers oxygen to the tissue by its receipt into the blood.The present structure of the lung alveoli, which are able to selectively pass the desired item and take back its products.
bodies immune system: the thymus (thymus), lymph nodes, spleen They are involved in the development of specific cells that protect the human body from coming from outside the viral pathogens, infectious, protozoan, fungal diseases.After entering these agents, the immune defense cells immediately communicate with them, as a result of specific reactions occur, which will be evidenced by a number of characteristic symptoms: redness, heat, pain, swelling, dysfunction of the respective organ damage.
Systems organs have all the time to update your cellular structure.It is therefore necessary supply of nutrients: fats, carbohydrates, proteins.The last elements are the basic building material, which is necessary for all cells.This function is performed by the digestive system provided by the esophagus, stomach, intestine, which is divided into small and large.Also, it includes liver, pancreas.They produce the enzymes necessary to digest the incoming food components.The system also performs excretory function.Furthermore pancreatic hormones necessary to maintain physiological levels of blood glucose.
systems in human organs can not perform its function, if they accumulate harmful products that result from their activities.Therefore, the selection of all unwanted substances is an important function.For this there is the excretory system, which is represented by the kidneys, bladder.Also, it is possible to carry the skin, lungs.
reproductive system has the characteristic differences that allows for the separation of the floor in the female and male.It is characterized by the presence of specific cells that perform reproductive functions.In men, it is the sperm, female - egg.
Musculoskeletal system is designed to move the body in the surrounding space, as well as for the work of all internal organs.
