The Ventilation/perfusion Ratio

question 102

Multiple Choice

The ventilation/perfusion ratio

• A)is lowest at the apex of the lungs.
• B)increases when blood flow is decreased.
• C)decreases when ventilation is increased.
• D)increases due to dilation of the pulmonary arterioles.

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Definitions:

Autonomic Nervous System

The autonomic nervous system is part of the peripheral nervous system that controls involuntary bodily functions, including heart rate, digestion, and respiratory rate.

Fight-or-Flight Response

The body's automatic, physiological reaction to perceived threats or emergencies, preparing an individual for fighting or fleeing.

Recording Electrodes

Devices used to detect electrical activity in the body, such as brainwaves or heart activity, by recording the electrical potential changes over time.

Scalp

The skin covering the skull, often bearing hair, which provides protection and supports sensory input.