An Area of the Lung Has No Ventilation but Is $\dot { V }$

question 70

Multiple Choice

An area of the lung has no ventilation but is normally perfused by the pulmonary circulation. Which of the following statements are correct?
I .Blood exiting the pulmonary capillary will have a PO₂ = 40 and a PCO₂ = 46.
II.The area represents an alveolar shunt.
III.The $\dot { V }$ / $\dot { Q }$ is 0.

• A)II and III
• B)I and III
• C)II only
• D)I, II, and III

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Definitions:

Short-Term Memory

The part of memory where small amounts of information are temporarily held for a short period.

Frontal Lobe

The part of the brain located at the front of each cerebral hemisphere, associated with reasoning, motor skills, higher-level cognition, and expressive language.

Synaptic Activity

Synaptic Activity refers to the process by which neurons communicate with each other through the release and reception of neurotransmitters at the synapse.

Limbic System

Part of the brain involved with emotions and olfaction; includes the cingulate gyrus, hippocampus, habenular nuclei, parts of the basal ganglia, the hypothalamus (especially the mammillary bodies, the olfactory cortex, and various nerve tracts).