Unit 1 Test Review Respiratory System

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Unit 1: Test Review Respiratory System: Structures: Nose – Wets and warms the air. Air enters. Mouth – Wets and warms the air. Air enters. Nasal cavity – Preferred entrance for outside air into the respiratory system. The hairs that line the inside wall are part of the air-cleansing system. Larynx – Voice box. Contains the vocal chords. Moving air breathed in and out creates sound. Trachea – Filters air we breathe and branches into the Bronchi. Bronchi – Two air tubes that branch off the Trachea and carry air directly into the lungs. Bronchioles – Branches from the Bronchi, which ends, contain the alveoli. Alveoli – Very small air sacs that are the destination of air breathed in. Where gas exchange occurs. Diaphragm – When…show more content…
Most important part of digestion takes place here. Nutrients are absorbed into the Villi and sent into the bloodstream where nutrients can travel to your cells. Large Intestine – Five feet long. Thicker and wider than small intestine. Undigested food travels into the large intestine. Excretes non-absorbed material passed from the small intestine. Water absorption. Stores waste and house bacteria that make vitamin K. Rectum – Feces are stored in the rectum before being expelled along the anal canal. Liver – Major role in dealing with the nutrient products of food digestion. Detoxifies harmful substances in the intestines. Involved in recycling red blood cells by breaking them down. By product is bile, which is important in the breakdown of fats. Produces essential proteins and clotting factors for the blood and regulates metabolism and cholesterol. Gall Bladder – Stores bile secreted by liver. Bile is used to help dissolve fats in the small intestine. Pancreas – Functions both as an exocrine gland and an endocrine gland. Exocrine portion secretes digestive enzymes carried to the duodenum. Endocrine portion secretes hormones into the blood stream to help the body regulate sugar
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