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.

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

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

Which of the following statements is/are correct? I. Striped muscles are in the form of bundles of cells. II. The Pal muscle fibres, which are called fasciculi. III. Skeletal muscles form the largest tissue in the body. IV. Cardiac muscles in the embryo are originated from mesenchyma cell. Choose the option with the correct statement(s).

Which of the following statements are correct about Sino-atrial node A) It is responsible for initiating and maintaining the rhythmic contractile activity of the heart B) It is auto-excitable and generates 70 - 75 action potentials per minute C) It sets the pace of the activities of the heart and is called pacemaker

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. Which of these are correct ?

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 ?

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 ?

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 ?