Which of the Following Is True During Exercise

question 2

Multiple Choice

Which of the following is true during exercise?

• A)Blood flow is uniform throughout the lung
• B)Lung diffusing capacity increases because blood flow is continuous in all pulmonary capillaries
• C)Pulmonary blood volume decreases
• D)The transit time of blood in the pulmonary capillaries does not change from rest

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Definitions:

Membrane

A selective barrier that allows some substances to pass while excluding others, fundamental to cellular function and structure.

Impulses

Impulses are sudden urges to act or rapid electrical discharges that travel along nerve fibers, facilitating communication between different parts of the body.

Stretch-Activated Channels

Ion channels that open in response to mechanical deformation of the cell membrane, playing a role in various physiological processes.

Motor Neurons

Motor neurons are nerve cells that originate in the spinal cord and brainstem and send signals to muscles, stimulating them to contract and produce movement.