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WM Biology Resp Sys
key words for chapter 37 section 1
| Question | Answer |
|---|---|
| nasal cavity | large air filled space above and behind the nose in the middle of the face. Filled with hairs that trap particles in the air. |
| pharynx | the part of the throat situated immediately behind the mouth and nasal cavity. |
| larynx | "voice box", organ in the neck which involves breathing, sound production, and protecting the trachea against food aspiration. |
| trachea | a tubelike passageway that leads to bronchi, which leads into the lungs. |
| bronchi | a passage of airway in the respiratory tract that conducts air into the lungs. |
| bronchiole | The first airway branches that no longer contain cartilage. They are branches of the bronchi. The bronchioles terminate by entering the circular sacs called alveoli. |
| epiglottis | The flap of elastic cartilage tissue covered with a mucous membrane, attached to the entrance of the larynx. |
| diaphragm | A thin sheet of muscle under the lungs. |
| the mechanics of breathing | in order to inhale the diaphram contacts and flattens, while the muscles pull the rib cage upwards increasing the volume of the chest cavity. |
| medulla oblongata | The lower half of the brainstem. It controls the respiratory system by detecting carbon dioxide levels in the blood, when the carbon dioxide levels get to high, it tell the ribs to contract. |
| alveoli | The sacs of the lungs where oxygen and carbon dioxide are exchanged by diffusion between the air and blood. |
| diffusion | random movement of particles from an area of higher concentration to an area of lower concentration. |
Created by:
TBrylewski
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