Respiratory System

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by RafaelaTorigoe
Last updated 7 years ago

Human Anatomy

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Respiratory System

1. Ventilation:Firstly, the air enters the human body through the nose, then it passes through the nasal cavity. After, it goes down the pharynx then the larynx. Food can't enter the larynx because there's a tissue that keeps food from entering the respiratory track. This tissue is called epiglottis. After the air gows down the larynx, it passes through the bronchi. Finally, it passes through the bronchioles and reaches the alveoli.

Respiratory System

Pulmonary Gas Exchange.

Journey of the Air:1. Ventilation.2. Pulmonary gas exchange.3. Gas transport.4. Peripheral gas exchange.

2. Pulmonary Gas Exchange:This process is the exchange of gases between inhaled air and the blood. It occurs in the alveoli, which are tiny air sacs surrounded by pulmonary capillaries. After you inhale, the air in the alveoli has higher concentration of oxygen than the blood in the pulmonary capillaries, so the oxygen diffuses from the alveoli to the blood in the capillaries. In contrast, the blood in the pulmonary capillaries has higher concentration of carbon dioxide than the alveoli, so it diffuses in the opposite direction. Integration: This can be related to the Second Law of Thermodynamics because this law states that heat is transferred from an area with higher concentration to an area with lower concentration. Pulmonary gas exchange is relatable to this law because the oxygen diffuses from an area of higher concentration to an area of lower concentration.

4. Peripheral Gas Exchange:The capillaries that supply the body tissues are called peripheral capillaries. The cells of the body have a lower concentration of oxygen than does the blood in the capillaries, so the oxygen diffuses from the capillaries into the body cells. Carbon dioxide is produced as a byproduct of cellular respiration, so it's more concentrated in the body cells than in the blood of the peripheral capillaries. As a result, carbon dioxide diffuses in the opposite direction.

3. Gas Transport:After the blood becomes oxygen-rich, it leaves the lungs and goes to the heart. The heart pumps the blood into arteries, which carry it throughout the body. Eventually, the blood reaches the capillaries, which supply body tissues.

Diseases:The common cold is a disease that causes your nasal passages to become congested. Many other diseases affect the respiratory system, but most of them are more serious than a cold. Asthma causes the air passages of the lungs to periodically become too narrow, often with excessive mucus production. This causes difficulty breathing, chest tightness, and coughing. Pneumonia is a disease in which some of the alveoli fill with fluid and blood cells, so gas exchange can't occur. Some of the symptoms are coughing, chest pain, and difficulty breathing. Pneumonia may be caused by an infection or injury of the lungs. Emphysema is a disease in which the alveolar membranes break down; therefore, less gas can be exchanged in the lungs. This causes shortness of breath. This damage is usually caused by smoking and it's irreversible.

Video about health problems caused by smoking.


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