Which of the Following Are True About Intermittent Positive-Pressure Breathing

question 59

Multiple Choice

Which of the following are true about intermittent positive-pressure breathing?
1) During inspiration, pressure in the alveoli decreases.
2) The pressure gradients of normal breathing are reversed.
3) During inspiration, alveolar pressure may exceed pleural pressure.
4) Energy stored during inspiration causes a passive exhalation.

• A)1 and 3 only
• B)1, 2, and 3 only
• C)3 and 4 only
• D)2, 3, and 4 only

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Definitions:

Autonomic Reflex

A bodily reflex mediated by the autonomic nervous system that regulates the function of internal organs, such as heart rate and digestion, without conscious effort.

Pupillary Light

The reflex change in pupil size in response to changes in light intensity, which is vital for protecting the retina and adapting vision to varying light conditions.

Trigeminal

Pertaining to the fifth cranial nerve, which is responsible for sensation in the face and motor functions such as biting and chewing.

Glosspharyngeal

A cranial nerve that supplies motor fibers to the pharynx and tongue, and sensory fibers to the tonsils, pharynx, and middle ear, playing a key role in swallowing and taste.