Lifetime Fitness & Wellness Pursuits PISD CBE Semester 1 Practice Exam

What is heart rate?

The beat of the heart during rest. The number of times the heart beats per minute. The speed of blood flow through arteries. The force of heart contractions.

Correct Answer:

The number of times the heart beats per minute.

Explanation:

Heart rate is the number of times the heart beats in one minute. It’s a rate, shown in beats per minute, that tells you how often the heart is contracting. It can rise with exercise, stress, or excitement, and it falls with rest or improved fitness. The other ideas describe different things: a single beat during rest is just one beat, not how often it happens; the speed of blood flow through arteries refers to how fast blood moves (velocity); and the force of heart contractions refers to how hard the heart squeezes each beat (contractility). So the best description is the count of heartbeats per minute.

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