Advertisements
Advertisements
Question
Write the features that distinguish between the two.
Sino-atrial node and Atrio-ventricular node
Advertisements
Solution
| Sino-atrial node | Atrio-ventricular node |
| 1. SA node is present in the right upper comer of the right atrium | 1. AV node is present in the lower left comer of the right atrium |
| 2. It initiates and maintains the rhythmic contractile activity of the heart | 2. It passes the electrical impulses from SA node to AV bundle |
| 3. It is also called pace-maker | 3. It is also called pace-setter |
APPEARS IN
RELATED QUESTIONS
Describe the evolutionary change in the pattern of heart among the vertebrates.
Sino-atrial node is called the pacemaker of our heart. Why?
What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning of heart?
Conversion of ammonia into uric acid occurs through --------------
A patient’s chart reveals that he has a cardiac output of 7500 mL per minute and a stroke volume of 50 mL. What is his pulse rate (in beats/min)
At any given time there is more blood in the venous system than that of the arterial system. Which of the following features of the veins allows this?
Distinguish between mitral valve and semi lunar valve.
Right ventricular wall is thinner than the left ventricular wall. Why?
What are the heart sounds? When and how are these sounds produced?
Select the correct biological term.
The substances which gives red cells their colour.
Which among the followings is correct during each cardiac cycle?
The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is ______.
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?
Following are the stages of pathway for conduction of an action potential through the heart:
- AV bundle
- Purkinje fibres
- AV node
- Bundle branches
- SA node
Choose the correct sequence of pathway from the options given below:
