In these following correct statement about the heart are
I. The sino-atrial node (SAN) is present in the right top corner of the right atrium
II. Ligamentum arteriosum connects the aorta and pulmonary trunk.
III. Purkinje fibres constituent a portion of the bundle of His .
IV. The pulmonary trunk connects the right ventricle to the lungs

Which of the following statements about conducting system of the heart is INCORRECT ? I. Mass of nodal tissue seen in the lower-left corner of the right atrium is the sinoatrial node. II. The nodal musculature can generate action potentials only in response to external stimuli . III. The number of action potential that could be generated in a minute varies at different parts of the nodal system . IV. The SAN can generate the maximum number of action potential , i.e., 80-85 min^(-1)

Which of the following statements about conducting system of the heart is INCORRECT ? I. Mass of nodal tissue seen in the lower-left corner of the right atrium is the sinoatrial node. II. The nodal musculature can generate action potentials only in response to external stimuli . III. The number of action potential that could be generated in a minute varies at different parts of the nodal system . IV. The SAN can generate the maximum number of action potential , i.e., 80-85 min^(-1)

Read the following statements ( A-C ) about the human heart : A. The SA node is a specialized mass of cardiac tissue present in the lower-left corner of the right atrium close to the AV septum. B. The body has the ability to alter the heart rate, cardiac output but not stroke volume. C. The end of the T- wave in ECG marks the end of the systole. How Many statements is /are correct from the above?

Read the following statements and select the correct ones (i) Nodal tissue is specialised cardiac musculature in human heart which has the ability to generate action potential due to an external stimuli (ii) Position of SAN - right corner of right atrium (iii) Position of AVN - right corner of ventricle (iv) AV bundle continues from AVN (v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.

Read the following statements and select the correct ones (i) Nodal tissue is specialised cardiac musculature in human heart which has the ability to generate action potential due to an external stimuli (ii) Position of SAN - right corner of right atrium (iii) Position of AVN - right corner of ventricle (iv) AV bundle continues from AVN (v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.

Read the following statements about the internal structure of the human heart. I. Humans have a an auto - excitable , chambered , muscular and myogenic heat. II. The heart is mesodermal in origin and is present symmetrically between two lungs in the thoracic cavity. III. The opening between the right atrium and left ventricle is guarded by a tricuspid valve. IV. Only the sino - atrial node of the heart has hte ability to generate action potentials without any external stimuli. How many statement/s is/ are incorrect from the above ?

Read the following statements about the internal structure of the human heart. I. Humans have a an auto - excitable , chambered , muscular and myogenic heat. II. The heart is mesodermal in origin and is present symmetrically between two lungs in the thoracic cavity. III. The opening between the right atrium and left ventricle is guarded by a tricuspid valve. IV. Only th sino - atrial node of the heart has hte ability to generate action potentials without any external stimuli. How many statement/s is/ are incorrect from the above ?