S.A Node and A.V Node

Differentiate between SA node and AV node

If there is a blockage between the AV node and AV bundle, how will this affect the appearance of the ECG /

Go through the following statements (i) Vagus nerve decreases the rate of impulse formation from the SA node and its conduction (ii) As the human heart is myogenic in nature, the rate of formation and conduction of cariac impulse cannot be changed by the action of nerves (iii) The end of T-wave in ECG marks the end of systole. (iv) If the P-wave in ECG is inverted , it indicates that SA node fails to initiate impulse and the atrial muscle depolarises by the impulse originating in A.V. node. Whic of these are correct ?

The number of angular nodes and radical nodes in 3s orbital are

The time taken by the impulse to travel through atria, AV node, and the rest of conducting tissue is

The number of radial nodes and angular nodes for d-orbital can be represented as

In psi_(321) , the sum of angular momentum, spherical nodes and angular node is

What are nodes and antinodes?

Choose the correct alternative (a), (b), (c) or (d) for each of the questions given below : The distance between successive nodes and anti-nodes is :

Calculate the total number of angular nodes and radial nodes present in 3p orbital.