Q. No.What is the state that describes the hemoglobinic acid?
1.
oxidized
2.
hydrated
3.
reduced
4.
hyper
What will be the partial pressure of oxygen in a mixture of gases where the total pressure is 500 mmHg and oxygen comprises 20% of the gas mixture?
| 1. 0.1 mm Hg | 2. 10 mm Hg |
| 3. 100 mm Hg | 4. 200 mm Hg |
Alveoli are tiny, balloon-shaped air sacs that sit at the very end of the respiratory tree, branching off the _______.
| 1. tertiary bronchi | 2. bronchioles |
| 3. terminal bronchioles | 4. respiratory bronchioles |
The basic rhythm of breathing is controlled by:
1. peripheral chemoreceptors
2. dorsal respiratory group of the medullary rhythmicity center
3. ventral respiratory group of the medullary rhythmicity center
4. pneumotaxic area
The opening between the vocal folds is called:
| 1. | trachea | 2. | epiglottis |
| 3. | laryngopharynx | 4. | glottis |
An important region of the body located between the lungs, where structures like the heart lie, is known as:
| 1. pleural cavity | 2. thoracic space |
| 3. mediastinum | 4. pericardial cavity |
The pulmonary function of a person reveals the following values:
a. tidal volume = 500 mL
b. residual volume = 1000 mL
c. inspiratory reserve volume = 2500 mL
d. expiratory reserve volume = 1000 mL
His vital capacity is
| 1. 3000 mL | 2. 3500 mL |
| 3. 4000 mL | 4. 5000 mL |
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The middle ear cavity is connected to the nasopharynx by:
| 1. | auditory tubes | 2. | internal nares |
| 3. | nasolacrimal ducts | 4. | paranasal sinuses |
The most negative pressure at the end of normal inspiration would be:
| 1. alveolar | 2. tracheal |
| 3. partial | 4. pleural |
The volume of air that is available for gas exchange each minute is the
1. minute ventilation
2. anatomical dead air space
3. physiological dead air space
4. alveolar ventilation
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