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Unit 2 Chapter 22
Quiz
| Question | Answer |
|---|---|
| How is the vital capacity calculated? | Expiratory reserve volume + tidal volume + inspiratory reserve volume |
| Each hemoglobin molecule can transport up to __________blank oxygen molecules. | 4 |
| Which two ligaments extend from the thyroid cartilage to the arytenoid cartilages? | Vestibular and vocal |
| True or false: The rate of oxygen diffusion is affected by the pressure gradient of carbon dioxide. | False |
| Which of the following does not contain ciliated cells? Nasal cavity Trachea Primary bronchus Terminal bronchiole Larygopharynx | Larygopharynx |
| Mucus plays an important role in cleansing inhaled air. It is produced by __________blank of the respiratory tract. | goblet cells |
| Output from higher brain centers can bypass both the DRG and VRG and go directly to __________blank, which controls the accessory muscles of respiration. | spinal integration centers |
| True or False: The serratus anterior is active in eupnea. | False |
| True or False: The expansion of the lungs during inspiration generates a pressure gradient causing air to flow into the lungs. This is an example of Boyle's law. | True |
| The vagus and glossopharyngeal nerves carry afferent signals from peripheral chemoreceptors to a chemosensitive area in the __________blank. | medulla oblongata |
| True or False: According to the Bohr effect, a low level of oxyhemoglobin enables the blood to transport more CO2 | False |
| Which center bears the primary responsibility for generating the respiratory rhythm, but is influenced by several other centers? | VRG |
| Blood banks dispose of blood that has low levels of bisphosphoglycerate. What would be the probable reason for doing so? | Erythrocytes low in BPG do not unload O2 very well. |
| Congestive heart failure results in which of the following? | Ischemic hypoxia |
| True or False: The maximum amount of air the lungs can contain is known as inspiratory capacity. | False; Total lung capacity is the maximum amount of air the lungs can contain Inspiratory capacity- Maximum amount of air that can be inhaled after a normal tidal expiration |
| Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen in order to avoid what condition? | Oxygen toxicity |
| True or False: Gas transport is the process of carrying gases from the alveoli to the systemic tissues and vice versa. | True |
| Which of the following is not a function of the respiratory system? Control of pH Promotes the flow of lymph and venous blood Helps regulate blood pressure Assists in the synthesis of vasodilators Aids in defecation | Assists in the synthesis of vasodilators |
| The upper respiratory tract extends from the nose through the __________blank. | larynx |
| The heart indents into the __________blank of the left lung. | cardiac notch |
| Tom is in respiratory arrest due to an electrical shock. Why does a good samaritan have up to 4 or 5 minutes to begin CPR and save Tom's life? | There is a venous reserve of oxygen in Tom's blood. |
| During exercise, which of the following directly increases respiratory rate? | Anticipation of the needs of exercising muscle |
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