At the Base of the Lungs

question 32

Multiple Choice

At the base of the lungs:

• A) alveolar gas pressure exceeds arterial perfusion pressure.
• B) arterial perfusion pressure and alveolar gas pressure are less than at the apex.
• C) arterial perfusion pressure exceeds alveolar gas pressure.
• D) arterial perfusion and alveolar gas pressure are equal.

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Definitions:

Cardiac Muscle Cells

Specialized muscle cells found in the heart that are responsible for the heart's contraction, enabling it to pump blood throughout the body.

Cardiac Output

The volume of blood pumped by the heart per minute, a key measure of cardiovascular health and function.

Cardiac Arrest

An abrupt loss of heart function, leading to a sudden stop in effective blood flow and requiring immediate emergency treatment.

Mitochondria

Organelles within cells that are known as the "powerhouses," generating most of the cell's supply of adenosine triphosphate (ATP) used as a source of chemical energy.