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Class Progress
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Chapter Listing

Tracheostomy Care - DEMO

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Chapter 1: Basic Airway Anatomy

The living cells in our body require oxygen to perform cellular respiration. Cellular respiration is not “breathing,” but is a process whereby sugar is converted to fuel for the cell to use to perform its function. In humans, the oxygen needed for cellular respiration is inhaled by breathing before being distributed throughout the body via the blood. In the process of cells using energy to perform their function, they release waste in the form of carbon dioxide. It is the job of the respiratory system to transport these gases, oxygen and carbon dioxide, into and out of the body and to and from the cells. This is called respiration. For normal respiration to take place, the respiratory system, the nervous system and the cardiovascular system must work together. A buildup of carbon dioxide in the blood stimulates the brain to make breathing become deeper and faster. Once blood has picked up oxygen in the lungs, it travels to the left side of the heart. The heart then pumps the oxygenated blood out to all the tissues in the body through arteries. Most of the oxygen adheres to hemoglobin molecules on red bloods cells for transport. Red blood cells carry oxygen to tissue cells where it is released by the hemoglobin and used by the cell. Carbon dioxide diffuses out of the cell and into the blood. Blood-carrying carbon dioxide returns to the heart and lungs through veins. Carbon dioxide is then expelled from the body through exhalation. A functioning respiratory system is required for life.

Q: [The respiratory system] - Is the anatomical system of an organism that introduces respiratory gases to the interior and performs gas exchange. The anatomical features of the respiratory system include airways, lungs, and the respiratory muscles.
Q: [Hemoglobin] - The iron-containing pigment of red blood cells; functions primarily in transporting oxygen from the lungs to the body tissues
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