SA node is located in

These questions consist of two statements each,printed as Assertion and Reason.While answering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:The S.A. node acts as pacemaker. Reason:The S.A. node is located in the wall off right atrium near the interatrial septum.

Assertion. The S-A node acts as pace maker. Reason. The S-A node is located in the wall of the right atrium near the interatrial septum.

A wave of length 2m is superposed on its reflected wave to form a stationary wave. A node is located at x = 3m. The next node will be located at x=

A wave of length 2m is superposed on its reflected wave to form a stationary wave. A node is located at x = 3m. The next node will be located at x=

A wave of length 2m is superimposed on its reflected wave to form a stationary wave. A node is located at x=3m , the next node will be located at x equals to

SA node is called the pacemaker of the heart because

When SA node is stimulated by sympathatic nerve than the –

Which of the following statement(s) is/are correct? I. Bundle of His originates from the SA-node. SA-node is situated in the wall of right auricle. III. Auricular contraction stimulates the AV-node. IV. AV-node sets up the cardiac impulses 72 times per minute. Choose the correct answer.