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
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?
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.
What are the heart sounds? When and how are these sounds produced?
Select the correct biological term.
Destroyed in the liver and spleen after circulating in the blood for four months.
Read the following statements and choose the correct option
Statement 1: Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement 2: Action potential generated at sino-atrial node passes from atria to ventricles.
Define the following terms and give their location?
Purkinje fibre
The walls of ventricles are much thicker than atria. Explain.
Answer the following:
Which part of heart is responsible for initating and maintaining its rhythmic activity?
Cardiac activities of the heart are regulated by ______.
- Nodal tissue
- A special neural centre in the medulla oblongata
- Adrenal medullary hormones
- Adrenal cortical hormones
Choose the correct answer from the options given below:
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:
