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A&P Ch 25
Respiratory System
| Question | Answer |
|---|---|
| This structure prevents food or water from entering the trachea. | Epiglottis |
| These are two triangular pieces of mostly hyaline cartilage located at the posterior and superior border of the cricoid cartilage and attached to the true vocal cords. | Arytenoids cartilage |
| What is the name of the passageway that ends at air sacs in the lungs? | Bronchiole |
| How is oxygen transported through the blood? | Bound to hemoglobin |
| What factors affect hemoglobins affinity for oxygen? | Ph of blood Your answer is incorrect, Partial pressure of the oxygen, Amount of oxygen available |
| Parts of the upper respiratory system? | Nose, Pharynx, Nasal meatuses |
| The nose connects with the throat through the | Pharynx |
| The portion of the pharynx that opens to the mouth is called the | Oropharynx |
| During swallowing, which structure rises? | Pharynx |
| What is pitch controlled by? | Tension of the vocal chords |
| This is located anterior to the esophagus and carries air to the bronchi. | Trachea |
| Which of the below tissues maintains open airways in the lower respiratory system? | Hyaline cartilage |
| Which of the below tissues provides the functions of the lining of the walls of the conducting organs? | Ciliated pseudostratified columnar epithelium with goblet cells |
| The point where the trachea divides into right and left primary bronchi is a ridge called | Carina |
| What is the primary gas exchange site within the lung? | Alveolus |
| Which of the following tissues forms the exchange surfaces of the alveolus? | Simple squamous epithelium |
| These are cells of the alveoli that produce surfactant. | Type II alveolar cells |
| Exhalation begins when | Inspiratory muscles relax |
| The conducting airways with the air that does not undergo respiratory exchange are known as the | Anatomic dead space |
| This is the sum of the residual and the expiratory reserve volume. | Functional residual capacity |
| Which is the dominant method of carbon dioxide transport? | Dissolved in plasma as bicarbonate ions |
| This is direction of diffusion of gases at the alveoli of the lungs. | Oxygen into blood, carbon dioxide out of blood |
| This is direction of diffusion of gases at capillaries near systemic cells. | Oxygen out of blood, carbon dioxide into blood |
| What happens when blood becomes more acidic? | Hemoglobin releases oxygen more easily |
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