Second heart sound is associated with the
Important Questions on Circulatory System
Give the location of the following valve within the human heart.
Bicuspid valve
Give the location of the following valve within the human heart.
Thebesian valve
Give the location of the following valve within the human heart.
Tricuspid valve
| Column A | Column B |
| P. Neurogenic heart. | i. Human |
| Q. Bronchial heart. | ii. King crab |
| R. Pulmonary heart. | iii. Shark |
Statement (S): The sinoatrial node is called 'Pace-maker'.
Reason (R): The sinoatrial node contains specialised cardiomyocytes and generates action potentials without any external stimuli.
The correct answer is
Give the location of the following valve within the human heart.
Eustachian valve.
Reason (R): In the heart of the human embryo, oxygenated and deoxygenated blood is completely separated.
| Column – I | Column – II | ||
| a. | Tricuspid valve | i. | Between left atrium and left ventricle. |
| b. | Bicuspid valve | ii. | Between the right ventricle and pulmonary artery. |
| c. | Semilunar valve | iii. | Between the right atrium and right ventricle. |
Match the following related to the cardiac cycle.
| Column I | Column II | ||
| Cardiac Cycle | |||
| Atrial Systole | |||
| Ventricular Systole | |||
| Cardiac Diastole | |||
Assertion : Dub' is one of the sounds of the heart caused during a cardiac cycle.
Reason : The sound is due to closure of semilunar valves present at the bases of aortic arches.
