What is the number of lobes in the right and the left lungs respectively?
1. two, one | 2. two, three |
3. three, two | 4. four, three |
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 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 |
Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because
1. there is a negative pressure in the lungs
2. there is a negative intrapleural pressure pulling at the lung walls
3. there is a positive intrapleural pressure
4. pressure in the lungs is higher than the atmospheric pressure