by Jan 13, 2020Uncategorized0 comments

Breathing (or respiration, or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.

All aerobic creatures need oxygen for cellular respiration, which uses the oxygen to break down foods for energy and produces carbon dioxide as a waste product. Breathing, or “external respiration”, brings air into the lungs where gas exchange takes place in the alveoli through diffusion. The body’s circulatory system transports these gases to and from the cells, where “cellular respiration” takes place.[1][2]

The breathing of all vertebrates with lungs consists of repetitive cycles of inhalation and exhalation through a highly branched system of tubes or airways which lead from the nose to the alveoli.[3] The number of respiratory cycles per minute is the breathing or respiratory rate, and is one of the four primary vital signs of life.[4] Under normal conditions the breathing depth and rate is automatically, and unconsciously, controlled by several homeostatic mechanisms which keep the partial pressures of carbon dioxide and oxygen in the arterial blood constant. Keeping the partial pressure of carbon dioxide in the arterial blood unchanged under a wide variety of physiological circumstances, contributes significantly to tight control of the pH of the extracellular fluids (ECF). Over-breathing (hyperventilation) and under-breathing (hypoventilation), which decrease and increase the arterial partial pressure of carbon dioxide respectively, cause a rise in the pH of ECF in the first case, and a lowering of the pH in the second. Both cause distressing symptoms.

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Vitae purus faucibus ornare suspendisse sed nisi lacus sed. Sed vulputate mi sit amet mauris commodo. Quisque egestas diam in arcu cursus. Fusce id velit ut tortor pretium viverra suspendisse potenti nullam. Proin gravida hendrerit lectus a. Amet facilisis magna etiam tempor orci eu lobortis elementum. Ultricies integer quis auctor elit sed vulputate mi. Egestas quis ipsum suspendisse ultrices gravida. Netus et malesuada fames ac turpis egestas. Urna cursus eget nunc scelerisque viverra mauris. Posuere ac ut consequat semper viverra nam. Nascetur ridiculus mus mauris vitae. Mi tempus imperdiet nulla malesuada pellentesque.

Accumsan lacus vel facilisis volutpat est velit. Turpis egestas pretium aenean pharetra. Velit sed ullamcorper morbi tincidunt ornare. Lectus arcu bibendum at varius vel pharetra vel turpis nunc. Facilisi nullam vehicula ipsum a arcu cursus vitae. Amet volutpat consequat mauris nunc. Lorem ipsum dolor sit amet consectetur. Semper viverra nam libero justo laoreet sit amet cursus. Condimentum vitae sapien pellentesque habitant morbi tristique senectus et. Volutpat odio facilisis mauris sit.

Aliquam ultrices sagittis orci a scelerisque purus semper. Scelerisque eu ultrices vitae auctor eu augue ut. Nisi est sit amet facilisis magna etiam tempor. Facilisis magna etiam tempor orci eu lobortis. Quis enim lobortis scelerisque fermentum dui faucibus in. Eget lorem dolor sed viverra ipsum nunc. In fermentum posuere urna nec tincidunt praesent. Facilisis mauris sit amet massa. Arcu cursus euismod quis viverra nibh cras pulvinar mattis. Cras semper auctor neque vitae tempus quam pellentesque nec nam. Nullam eget felis eget nunc lobortis mattis. Enim sit amet venenatis urna cursus eget nunc. Est pellentesque elit ullamcorper dignissim cras tincidunt. Sit amet venenatis urna cursus eget. Neque gravida in fermentum et sollicitudin ac. Mauris sit amet massa vitae tortor. Cras fermentum odio eu feugiat pretium. Magna fringilla urna porttitor rhoncus dolor purus. Ipsum faucibus vitae aliquet nec.

A short bio comes here.

Your voice matters.

Submit a Comment

Your email address will not be published.

Pin It on Pinterest