Question

Match the definition to the correct term in the given list.
The number of heart beats per minute.

Vein, cardiac cycle, cardiac output, heart rate, heart beat, double circulation, circulatory system, extracellular fluid, intercellular fluid, myogenic heart, neurogenic heart.

Answer 1

Vein - Veins are blood vessels that carry blood towards the heart.

2) Cardiac cycle - It is the performance of the human heart from the beginning of one heartbeat to the beginning of the next one.

3) Heart rate - Heart rate is the speed of the heartbeat measured by the number of contractions (beats) of the heart per minute. The heart rate can vary according to the body's physical needs. The rate of heartbeat is 72/min in the adult.

4) Heartbeat - It may refer to the cardiac cycle of the heart.

5) Double circulation - It is the type of circulation in which blood passes through the heart twice. In double circulation, the blood passes twice through the heart during one complete cycle. Double circulation is carried out by two ways, i.e., pulmonary circulation and systematic circulation.

6) Circulatory system - The system, which is primarily meant for the circulation of nutritive products in the body is called the circulatory system.

7) Extracellular fluid - It denotes all the body fluids outside the cell.

8) Intercellular fluid - it denotes body fluids within the cells.

9) Myogenic heart - It is capable of generating independent cardiac contraction.

10) Neurogenic heart - It is the heart which requires nervous impulse to contract the heart.

So, the correct option is 'Heart rate'.