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2. Tissues needs to take in oxygen and get rid of carbon dioxide.
1. Areas that take in oxygen
2. Nose warms and moistens the air.
3. Nose also filters our impurities.
1. Muscular tube about five inches long.
2. Passage way for both air and food.
3. Commonly referred to as the throat.
1. Commonly known as the voice box.
2. Air is warmed and filtered as it passes through.
3. Helps keep food and liquids from entering the respiratory system.
4. Also makes voice unique.
1. Commonly known as the windpipe.
2. Connects the pharynx to the bronchial tubes.
3. Air is warmed and moistened as it travels to the lungs
4. Dust, smoke, and bacteria are also tracked.
1. Most major organs of the repertory system.
2. It is where gas exchange occurs.
3. Two large bronchi continue to branch into smaller bronchioles.
4. Bronchioles terminate into small sacks called alveoli. 5. Capillaries surround the alveoli allow carbon dioxide to diffuse out of the blood,
while allowing molecular oxygen to absorb in.
6. Oxygen is carried in red blood cells, when carbon dioxide is carried in the
2. Digestive system
1. Major function is to break down the food that you eat to the molecular level.
1. Done chemically and mechanically
2. Is one big tube of varying diameters
1. Place where digestion begins
2. Food is broken down mechanically by the teeth
3. Saliva contains enzymes, that begin the chemical breakdown of food.
4. Tongue positions food for chewing and swallowing
5. Tongue takes the food
2. Pharynx and Esophagus
1. Passageway between the mouth and stomach
2. Lined with smooth muscle that gently squeezes the food you eat down
to your stomach.
3. Flap that separates repertory and digestive system called the epiglottis.
1. The chemical and mechanical breakdown of food continues here.
2. Muscular contractions squeeze the bolas received by the esophagus,
mix it with more enzymes and acids, until it is a liquid called chyme.
a. A break in the stomach wall
b. Caused when bacteria removes the mucus layer, exposing it to
4. Small intestine
1. A tube that is about 3- 4 meters long.
2. Small refers to diameter
3. It is here where the molecules of one's food are absorbed into the
4. Cells of the small intestine contain small projections called villi. Capillaries
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- Winter '14