Question

The number of beats ______ is called pulse rate.
A. Two minutes
B. Three minutes
C. Per minute
D. Four minutes

Answer 1

Hint: Heart rate pr pulse rate can be referred to as the number of beats in one minute. Heart rate in a normal adult human is 70-80 beats/min.

Complete answer: Cardiac output can be defined as the amount of blood that is ejected by the left ventricle in one minute or in one beat.
When the calculation of cardiac output is done based on one minute – it is called minute volume. When the calculation of cardiac output is done based on one beat – it is called stroke volume.
In one beat 70-75 ml of blood is ejected by the left ventricle.
Cardiac output = stroke volume × heart rate or pulse rate
                           = 70 × 72 = 5040 ml per minute or 5 L/min.
From the definition of pulse rate, we can clearly conclude that the number of beats per minute is called pulse rate.

Thus, option C. Per minute is the correct answer.

Note: Pulse can be felt in many arteries of the body.
For example – the radial artery of the wrist gives a very prominent sensation of pulse rate.
Doctors generally check pulse from the radial artery. Besides this artery, the carotid artery that present in the neck portion also gives a prominent sensation of pulse rate.
The police and the special branch officers check this pulse rate for the identification of a dead body.