Figure 20-2 Cardiac Cycle

question 8

Multiple Choice

Figure 20-2 Cardiac Cycle

Use Figure 20-2 to answer the following questions:
-What occurs at "A" on the graph?

• A) Semilunar valve opens.
• B) Semilunar valve closes.
• C) AV valve opens.
• D) AV valve closes.
• E) end systolic volume

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Definitions:

Tachypnea

An abnormally rapid breathing rate, often indicative of a respiratory issue or other medical condition.

Breathing

The process of inhaling oxygen and exhaling carbon dioxide from the atmosphere, essential for life.

Spirometer

A device used to measure the volume of air inhaled and exhaled by the lungs.

Lung Volume

The total volume of air that the lungs can hold, varying with different phases of the respiratory cycle such as inhalation and exhalation.