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[A] : SA node is contraction centre or ...

[A] : SA node is contraction centre or Pace Maker.
[R]: Nodal fibres of SA node are embeded in the wall of right atrium

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
B
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SA node is located in

Function of SA node is

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.

Read the following statements and select the correct option Statement 1 : The SA node acts as pacemaker Statement 2 : The SA node is located in the wall of the right atrium near the interatrial septum

Why is the S-A node called pace-maker of the heart ?

Pace maker (S.A. Node) of the heart is situated

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.

Write the full form of S.A. node. What is its other name ?

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