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Addison Gunter
Physiology weeks 7-14
| Term | Definition |
|---|---|
| More than two-thirds of the carbon dioxide carried by blood is carried in the form of | carbonic acid. |
| What variations exist in the body to temporarily store or carry oxygen? | neuroglobin myoglobin fetal hemoglobin |
| An obstructive lung disorder that is characterized by recurring spasms of the smooth muscles in the wall of the bronchial air passages is | asthma |
| The exit of the bicarbonate ion from the red blood cell is balanced by the inward transport of another negative ion, chloride. This countertransport of negative ions is often called the _____ shift. | chloride |
| Which term refers to the volume of inspired air that actually reaches, or “ventilates,” the alveoli? | alveolar ventilation |
| Which structural feature facilitates oxygen diffusion from the alveolar air into the blood in lung capillaries? | The alveolar and capillary walls are both very thin. The alveolar and capillary surfaces are both extremely large. The lung capillaries accommodate a large amount of blood at one time. Each red blood cell comes close to alveolar air. |
| During inspiration, as the size of the thorax increases, the | intrapleural and alveolar pressures decrease. |
| Oxygen enters blood from alveolar air because the partial pressure of alveolar air is | greater than the partial pressure of incoming blood. |
| During the respiratory cycle, intrapleural pressure is always less than alveolar pressure. This difference is called | transpulmonary pressure. |
| Which oxygen-binding protein helps move oxygen out of the blood and into muscle cells? | myoglobin |
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Addisongunter
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