Blood and Digestion

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Blood a journey through the body. You might find yourself asking, what does blood have to do with digestion, respiration and circulation? Hopefully, after the presentation all of your questions will be answered. When a person thinks of digestion they usually think about what happens in the stomach. A lot has happened to digest the food way before it gets to the stomach. It starts in the mouth or oral cavity. It is a process called mechanical digestion. First, Mastication begins. Mastication is the chewing of the food. A person will crush, grind and tear the food apart. That gets the food ready for deglutition. Deglutition is the swallowing of the mashed up food. When we swallow peristalsis begins. Peristalsis is what happens…show more content…
Like the nose it also filters dust and other particles from reaching the lungs, and it has mucous membranes to warm and moisten the air. When the air leaves the pharynx it moves on to the larynx. The larynx is also called the voice box. It not only remains open for speech, but also during respiration. The larynx merges with the trachea just below the vocal cords. The trachea is also called the wind pipe, and it is a one inch tube that connects to the bronchi. The bronchi divide into the right and left mainstream bronchi. After entering a lung each side branches off forming many smaller passages. In the center of the bronchi is the lumen. It is the central opening where the air passes through. The lungs are sponges that fill with air, and fill every inch the surrounding thoracic cavity. The lungs contain lobes. The lobes divide each lung, and the right lung being bigger has more lobe divisions. The pulmonary veins enter here and exit here as well. Inside the lungs are clusters of air sacks that are called alveoli. The alveoli are part of the bronchioles that enter each lung. The oxygen and carbon dioxide are exchanged in the lungs. The exchange happens from a small blood vassal nod the alveoli. When the oxygen exchange is completed the inhaled air moves into the blood. While the oxygen moves into the blood the carbon dioxide is exhaled by the lungs. Before the blood can be moved properly it has to be made into oxyhemoglobin.
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