Respiratory System
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24 terms
Terms | Definitions |
|---|---|
 circulatory | The respiratory system works closely with the ____ system, exchanging gases between air and blood. |
| oxygen, carbon dioxide | Homeostatic roles of the respiratory system are to regulate blood pH and blood ____ and ____ ____ levels. |
| Ventilation | Breathing (____) - when air gets into and out of the lungs |
| External | ____ Respiration - exchange of gases between lungs and blood. Occurs within the lungs. |
| Internal | ____ Respiration - exchange of gases between blood and body cells. Occurs at capillaries of the body. |
| Cellular | ____ Respiration - process that take place in the cells of organisms to convert energy from food into usable energy for the body. |
| nasal cavity | Air is warmed, moistened, and filtered as it is inhaled through the nostrils into the ____ ____. |
| pharynx | The ____ is the passageway for air that leads to the trachea; shared with digestive system |
| larynx | The ____ is the voice box where vocal chords are located. |
| epiglottis | The ____ acts as a lid or flap that covers the larynx and trachea (airway) so that food does not enter the lungs. |
| trachea | The ____ is the windpipe or airway. |
| cartilage | Smooth muscle with C-shaped ____ rings keep the trachea from collapsing. |
| cilia | The trachea is lined with fine hairs called ____. |
| uvula | The ____ blocks the passage into the nasal cavity when swallowing. |
| uvula | ____ - plays a role in articulation; assists with speech |
| passageway, smell, filter, warm | The upper respiratory tract functions as a ____ for respiration, as receptors for ____, to ____ larger foreign material, to moisten and ____ incoming air, and to resonate chambers for voice. |
| bronchi | The ____ are two branches at the end of the trachea, each leading to a lung. |
| bronchioles, branches | The ____ are a network of smaller ____ leading from the bronchi into the lung tissue and ultimately to air sacs. |
| alveoli, respiratory surface | The ____ are air sacs known as the "____ ____". |
| 1, pulmonary, Gas | The alveolar wall membranes are _ cell thick and are surrounded by ____ capillaries. ____ exchange takes place here. |
| diffusion | Gaseous exchange is the ____ of the oxygen and carbon dioxide that takes place in the alveoli part of the lungs. |
| hemoglobin | Oxygen is bound to the pigment ____ in red blood cells or is dissolved in blood plasma. |
| plasma, bicarbonate | Carbon dioxide is dissolved in blood ____, bound to hemoglobin, or is found in the form of plasma ____. |
| lungs | The ____ are spongy, air-filled organs located on either side of the chest thorax. |
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