 | Term | Definition |
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Nasal cavity |
Is seperated from the mouth by a the hard and soft palate.Air can enter here. |
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Cilia |
small hair like structures that trapp dust and other fine particles. |
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Respiration |
Helps ensure that the body gets the energy it needs for its functions. |
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Pharynx |
A tube common to both the respiratory and digestive systems. |
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Esophagus |
The tube that carries food to the stomach. |
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Larynx |
Delivers air. Box like structure located at the opening of the respiratory passageway. |
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Epiglottis |
Flap that seals of the respiratory track when eating. |
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Vocal cords |
Two flaps that are controlled by muscles. Make sound when air passes by them. |
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Trachea |
A tube about 12 cm in length which extends into the chest cavity. |
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Bronchi |
Right and left tubes that are made up of rings of cartilage that bringsair to the bronchioles. |
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Bronchioles |
The smallest branches and lack cartilage. Bring the air to the alveoli. |
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Alveolar ducts |
Attached to the bronchioles and bring the air to where gas exchange takes place. |
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Alveoli |
Where gas exchange takes place. |
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Lungs |
Elastic cavity that holds air and where all gas exchange takes place. |
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Bronchial tree |
Tubes that are in the lungs and break into smaller and smaller tubes. |
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Mucus |
Helps warm air and gets rid of dust particles. |
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Warming |
Your body does this to air so that is easier to absorb into your body. |
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Oral cavity |
Contains you tounge, teeth, hard and soft palate and other things. Air can enter here. |
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Moistening |
Makes it easier for your lungs to absorb the air. |
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Homeostasis |
The maintenance of a balanced internal environment. T he ability of the body to adjust and maintain the levels of oxygen and carbon dioxide. |
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External respiration |
Air enters body and travels to the lungs. |
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Internal respiration |
o2 diffusing into the blood stream and CO2 diffusing out. |
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Cellular respiration |
Cells take in O2 and give off CO2. |
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Cleaning |
Filtering dust ond other bacteria out of the body. |
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Capillary network |
Web of capillarys surrounding the alveoli. |
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Smoking |
Harms the lungs and the transfer of O2 to the blood. |
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Lung cancer |
Deformation of cells in lungs that cause death. |
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Nicotine |
An addictive drug that paralizes cilia. |
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Emphysema |
Damage to bronchioles colapse and air can not get to the alveoli. |
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Parietal pleura |
Lines the inner surface of the chest wall and covers the upper surface of the diaphram. |
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Pulmonary pleura |
Adhers to the surface of the lungs. |
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Intrapleural fluid |
A thin film of fluid inbetween the parietal pleura and the pulmonary pleura. |
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Diaphram |
One large muscle lying slightly above the waste line and separates the thoracic cavity from the abdominal cavity. Controls breathing. |
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Intercostal muscles |
Muscles between ribs that help with breath. When contract they pull ribs out and up. |
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Volume |
The amount the lungs can hold. |
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Pressure gradients |
Difference between high and low. |
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Diffusion |
The transfer of o2 into the blood stream and CO2 back. |
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Gas exchange |
The exchange of O2 and CO2 in the alveoli. |
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O2/CO2 |
Gases in the body. one is waste the other is needed for energy. |
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Inspiration/Inhalation |
Breathing air into the lungs. Caused by pressure gradients. |
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Expiration/Exhalation |
The air leaving the lungs. Caused by pressure gradients. |
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Negative feedback |
Returns body back to normal conditions. |
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Relax |
When the diaphram returns back to regular form. |
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Contract |
When your diaphram pulls down. |
