Advertisements
Advertisements
प्रश्न
Answer the following:
Which part of heart is responsible for initating and maintaining its rhythmic activity?
उत्तर
SA node or Sino Atrial Node is responsible for rhythmic activity. The SA (sinoatrial) node sends an electrical signal to the upper chambers of the heart (atria). The signal then travels to the lower heart chambers (ventricles) through the AV (atrioventricular) node, which causes them to contract, or pump. The heart's pacemaker is known as the SA node.
APPEARS IN
संबंधित प्रश्न
Write the differences between open and closed system of circulation
Describe the evolutionary change in the pattern of heart among the vertebrates.
Sino-atrial node is called the pacemaker of our heart. Why?
Distinguish between mitral valve and semi lunar valve.
Right ventricular wall is thinner than the left ventricular wall. Why?
Which among the followings is correct during each cardiac cycle?
Define the following terms and give their location?
Purkinje fibre
The walls of ventricles are much thicker than atria. Explain.
Write the features that distinguish between the two.
Open and Closed circulatory system
Answer the following:
What is specific in the heart of crocodiles among reptilians?
