JBL EMT Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Cardiac output (CO) is affected by:

blood pressure

Cardiac output (CO) is the volume of blood ejected by the heart per minute and is influenced by both heart rate (the number of heartbeats per minute) and stroke volume (the amount of blood pumped by the heart in one contraction). Blood pressure, while important for overall cardiovascular health, is not a direct determinant of cardiac output. In this case, the correct answer is "blood pressure" because it is not a direct factor affecting cardiac output, unlike heart rate and stroke volume which directly impact CO.

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heart rate only

stroke volume and heart rate

stroke volume only

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