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Short essay on Respiratory System in Humans (Or Man)

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❶The bronchial tubes branch off into smaller tubes called bronchioles. Oxygen then moves from the bloodstream into cells, which completes the first phase of respiration.

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The respiratory system is comprised of organs and tissues that help you breathe. The primary parts of this system are the respiratory tracts, the lungs and linked blood vessels, and the muscles that allow breathing.

The respiratory system likewise referred to as the ventilator system is a complicated biological system comprised of several organs that facilitate the inhalation and exhalation of oxygen and carbon dioxide in living organisms or, in other words, breathing.

Our cells require oxygen to endure. One of the waste items produced by cells is another gas called co2. The respiratory system takes up oxygen from the air we breathe and eliminates the undesirable co2. The primary organ of the respiratory system is the lungs. There are numerous systems that help in the smooth running and performance of our body. Some of them are the skeletal system, the digestion system, the worried system, the excretory system, etc.

Some of them are the skeletal system, the digestion system, the nervous system, the excretory system, and so on. Respiratory system is also a major part of our internal body system as we breathe and live through this.

We are all born with the very same device that does the very same thing, however a few of us wind up, for whatever factor, requiring a little assistance. The respiratory system likewise assists us to develop and smell noise. The following are the 5 vital functions of the respiratory system. Inside the lungs, oxygen is exchanged for carbon dioxide waste through the procedure called external respiration. Oxygen from breathed in air diffuses from the alveoli into lung blood vessels surrounding them.

Even if the air you breathe is contaminated or unclean, your respiratory system strains contaminant and organisms that get in through the nose and mouth. Contaminants are breathed or coughed out, ruined by digestion juices, or consumed by macrophages, a kind of blood cell that patrols the body trying to find germs to damage. The tiniest bronchioles end in a cluster of air sacs, jointly called an acinus. Trachea does not collapse even when there is no air in it because it is supported by rings of soft bones called cartilage.

The upper end of trachea has a voice box called larynx. The trachea runs down the neck and divides into two smaller tubes called 'bronchi' at its lower end. The singular of bronchi is bronchus. The two bronchi are connected to the two lungs. The lungs lie in the chest cavity or thoracic cavity which is separated from abdominal cavity by a muscular partition called diaphragm. The lungs are covered by two thin membranes called pleura. The lungs are enclosed in a 'rib cage' made of bones called 'ribs'.

We have not shown the rib cage in Figure 64 to keep the diagram simple. Each bronchus divides in the lungs to form a large number of still smaller tubes called 'bronchioles'. The smallest bronchioles have tiny air-sacs at their ends see Figure The pouch-like air-sacs at the ends of the smallest bronchioles are called 'alveoli' singular alveolus. The walls of alveoli are very thin and they are surrounded by very thin blood capillaries. It is in the alveoli that oxygen is taken into the body and carbon dioxide is eliminated.

In other words, it is in the alveoli that gaseous exchange takes place. The human lungs have been designed to maximise the exchange of gases as follows:. There are millions of alveoli in the lungs.

The presence of millions of alveoli in the lungs provides a very large area for the exchange of gases. And the availability of large surface area maximises the exchange of gases. For example, if all alveoli from the two human lungs are unfolded, they would give an area of about 80 square metres which is nearly the size of a tennis court!

The diaphragm is a sheet of muscle below the lungs. It helps in 'breathing in' and 'breathing out'. The muscles of chest also help in breathing in and breathing out. When we breathe in air, the diaphragm arid muscles attached to the ribs contract due to which our chest cavity expands. This expansion movement of the chest increases the volume inside the chest cavity. Due to increase in volume, the air pressure decreases inside the chest cavity and air from outside being at higher pressure rushes into the lungs through the nostrils, trachea and bronchi.

In this way, during the process of 'breathing in' the air sacs or alveoli of the lungs get filled with air containing oxygen. The alveoli are surrounded by very thin blood vessels called capillaries carrying blood in them. So, the oxygen of air diffuses out from the alveoli walls into the blood.


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- The respiratory system is a complex organ structure of the human body anatomy, and the primary purpose of this system is to supply the blood with oxygen in order for the blood vessels to carry the precious gaseous element .

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The Respiratory System essays The human respiratory system is a complex system involving the coordination of organs with different structural, functional and defensive mechanisms. The high costs and the high fatality rates associated with chronic respiratory disorders require some serious rethinking.

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Respiratory System – Essay Sample Respiratory system plays a major role of transporting oxygen to the circulatory system which in turn transports it to all cells of the body. Oxygen is very vital substance that helps cells get energy for cellular activities. Essay: The respiratory system The human body is organized into numerous complex systems that interact with each other in order for it to function and sustain life. One of those vital systems is the respiratory system.

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The respiratory system (likewise referred to as the ventilator system) is a complicated biological system comprised of several organs that facilitate the inhalation and exhalation of oxygen and carbon dioxide in living organisms (or, in other words, breathing). The Respiratory System Essay Words 7 Pages The respiratory system is a complex organ structure of the human body anatomy, and the primary purpose of this system is to supply the blood with oxygen in order for the blood vessels to carry the precious gaseous element to all parts of the body to accomplish cell respiration.