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A human respiratory system is a group of the organ that is responsible for taking in oxygen and expelling carbon dioxide. A large amount of energy is produced from the reaction between food and oxygen. This energy is used to perform various life activities. The respiratory system of the human consists of various parts. They are nose, pharynx, larynx, trachea or windpipe and lungs. The main respiratory organ is lungs.The respiratory system also helps the body maintain homeostasis or balance among the many elements of the body’s internal environment.The respiratory system helps the body maintain homeostasis or balance body’s internal environment. The short information about the parts of respiratory system is given below,
Process of respiration
When we take in air, the lungs expand and the size of the chest increases. The chest muscles and the diaphragm when return to its original position, the size of the chest decreases. During this condition, the air comes out of the lungs. The healthy man breathes 18 - 20 times in a minute. The rate of breathing increases during hard work, running, excitement, fear etc.
The atmospheric oxygen passes through nose, pharynx, larynx, trachea and last to lungs where gaseous exchange takes place. The oxygen when reaches the lungs it diffuses into the blood vessels. The carbon dioxide in blood vessels comes out into the lungs. The oxygenated blood reaches into the heart. With the help of different nerve, the heart pumps out blood into the different parts of the body. The oxygen then reacts with the food and a large amount of energy is produced which is utilized to perform life activities by the various cells, tissues and organs. During the reaction between oxygen and food, energy along with water and carbon dioxide is also produced. The carbon dioxide thus formed reaches the heart and to the lungs through different nerves and blood vessels.
Importance of Respiratory System
Our body cannot perform life activities without food. Food provides us energy. No living organisms can live without food. Food not only provides energy but it also creates unnecessary things and materials which are known as a waste product. This waste product needs to get removed from our body. Various parts of our body organ take part to remove this waste product from our body like kidneys, skin, urinary bladders, ureter, liver, etc. The main function of an excretory system is to remove waste from the body.
The skin performs excretion through sweat glands. These glands produce sweat that contains salt, excess oils, water, and other unnecessary substances. Similarly, nose and mouth also help to remove waste product like saliva, cough etc. Large intestine also helps in the removal of unwanted food materials. Similarly, lungs help to remove waste gases like carbon dioxide and water. The liver plays a vital role in keeping our body clean. Harmful poisons and chemicals that are either produced in the body or consumed are broken down and detoxified by the liver.
The main excretory product is urine, it removes nitrogenous compounds from our body. It contains a pair of kidneys, urinary bladder,ureter, urethra etc.Kidneys are bean-shaped organs of a reddish brown color that are found in the sides of the vertebral column. It filters waste from the blood. Each kidney contains millions of nephron which help to filter nitrogenous substances from the blood.
Importance of Excretory System
The different types of organ involved in the respiration are as follows,
The importance of respiratory system are as follows,
The importance of excretory system are as follows,