Human heart is myogenic:
- The correct statement is that the human heart is myogenic.
- This means that the heart has its own intrinsic pacemaker which generates electrical impulses to initiate and regulate its own contractions.
- The pacemaker region is called the sinoatrial (SA) node, located in the right atrium.
- The electrical impulses generated by the SA node spread throughout the heart, causing coordinated contractions of the atria and ventricles.
- This myogenic nature of the heart allows it to beat rhythmically even in the absence of any external neural input.
- The pacemaker cells in the SA node generate electrical impulses at a regular rate, which sets the pace of the heart's contractions.
- However, the rate can be influenced by neural and hormonal factors.

Pulse rate is different from the rate of heart beat:
- The correct statement is that the pulse rate is different from the rate of heart beat.
- The heart beat refers to the contraction and relaxation of the heart muscle, which results in the pumping of blood.
- The heart beat is measured in beats per minute (bpm).
- On the other hand, the pulse rate refers to the number of times the arterial walls expand and contract in response to the ejection of blood from the heart.
- The pulse can be felt at various locations on the body, such as the wrist, neck, or groin.
- The pulse rate is also measured in beats per minute (bpm).
- However, the pulse rate is usually slightly lower than the heart beat rate.
- This difference is due to the time it takes for the blood to travel from the heart to the peripheral arteries where the pulse can be felt.
- Factors such as age, fitness level, body size, and emotional and physical conditions can influence the difference between the heart beat rate and the pulse rate.

In summary, the human heart is myogenic, meaning it has its own intrinsic pacemaker. The heart beat refers to the contraction and relaxation of the heart muscle, while the pulse rate refers to the expansion and contraction of the arterial walls in response to the ejection of blood from the heart. The pulse rate is usually slightly lower than the heart beat rate due to the time it takes for the blood to reach the peripheral arteries.