Advertisements
Advertisements
प्रश्न
Answer in only one sentence of the following question:
Mention the role of the pacemaker in human heart.
Advertisements
उत्तर
- The Sinu-auricular (SA) node is the pacemaker of the heart.
- It generates wave of contraction which spread along the wall of atria and bring about their contraction.
- It has highest degree of rhythmicity and is the first to originate the cardiac impulses and determine the rate of heart beat.
APPEARS IN
संबंधित प्रश्न
Draw a diagram of the human heart and label its parts.
Which vein brings clean blood from the lungs into the heart?
Name any four heart conditions that occur commonly.
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
Name the parts numbered 1 to 6.
Name the Following
Layer, which surrounds the heart.
Describe the structure and working of the human heart.
How do the pulmonary artery and pulmonary vein differ in their function when compared to a normal artery and vein?
The rate of heartbeat is determined by ______.
Give the exact location of the pericardium.
Ventricles give rise to two large blood vessels called ______ and ______.
