Essay mechanism breathing and its control

The large surface area allows sufficient oxygen intake needed for releasing the large amount of energy required by us. The trachea is about 11 cm long. The lungs are a pair of spongy organs lying in the chest cavity formed by the ribs.

Air enters the nose through the nostrils. The air passes from the pharynx to the larynx, or the voice box. From the larynx the air goes to the trachea, or the windpipe.

Some carbon dioxide is also transported by haemoglobin. These open into extremely thin-walled, grape-shaped air sacs called alveoli. The trachea divides into two tubes called bronchi. The human respiratory system consists of a pair of lungs and a series of air passages leading to the lungs.

Inspiration inhalation is the process of breathing in, by which air is brought into the lungs. The respiratory tract from the nose to the bronchioles is lined by mucous membranes and cilia.

Some of it remains in the lungs. Human beings also have a system for transportation of gases. In very small organisms, there is no need to have a separate transportation system for gases because all its cells are involved directly in the exchange of gases by diffusion.

In this process, muscles attached to the ribs on their inner side contract, and the diaphragm and the abdominal muscles relax. The entire respiratory tract passage consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. There are two passages here—one for food and the other for air.

Each alveolus is covered by a web of blood capillaries. However, a large multicellular organism needs a mechanism for the transport of gases for its different organs and tissues.

Some of it reacts with water to form compounds useful for life processes. Haemoglobin has a great affinity for oxygen—each haemoglobin molecule binds to four molecules of oxygen.

Carbon dioxide is more soluble in water than oxygen.

The expansion of the chest cavity creates a partial vacuum in the chest cavity. After the exchange of gases in the lungs, the air has to be expelled. Each bronchus divides and branches out in the form of thinner tubes called bronchioles.

The muscles attached to the ribs on their outer side contract. This causes the ribs to be pulled out, expanding the chest cavity. Oxygen is carried by haemoglobin of the red blood cells. Their total surface area can be about a hundred times that of the body.

This keeps the lungs from collapsing and allows more time for the exchange of gases. The air in the lungs is pushed out and it passes out through the nose.An example of a homeostatic mechanism working is someone exercising, or running.

This is known as the stimulus in the homeostatic mechanism. Consequently, the person is now breathing faster, their body temperature is rising, and their heart rate is increasing.

Sep 25,  · An essay on the mechanism of breathing and its control. An essay on the mechanism of breathing and its control The basic mechanisms involved in inspiration and expiration are as follows; 1)Inspiration The contraction of the diaphragm and external intercostals muscles leading to an expansion of the lungs.

The Mechanism of Negative Feedback Essay - The Mechanism of Negative Feedback Homeostasis means beatified sex. It is an ability of an organism to control its internal environment, that is the composition of their body fluids, for them to survive fluctuating external conditions.

An essay on the mechanism of breathing and its controlThe basic mechanisms involved in inspiration and expiration are as follows;1)InspirationThe contraction of the diaphragm and external intercostals muscles leading to an expansion of the lungs. This /5(13). An essay on the mechanism of breathing and its control.

The basic mechanisms involved in inspiration and expiration are as follows; 1)Inspiration. An essay on the mechanism of breathing and its control.

Human Respiratory System and it’s Mechanism (with diagram)

Topics: Respiratory An essay on the mechanism of breathing and its control The basic mechanisms involved in inspiration and expiration are as follows; 1)Inspiration The contraction of the diaphragm and external intercostals muscles leading to an expansion of the lungs.

This expansion.

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Essay mechanism breathing and its control
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