Which of the following vein has the least amount of urea?
Important Questions on Respiration and Circulation
Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence beginning with the first word that is underlined:
Artery, Capillaries, Venule, Vein, Arteriole.
| 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. |
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
Which one of the following graphs best describes the Blood Pressure (BP) change when blood moves from aorta to capillaries?
Blood capillaries are made of
Pulmonary artery differ from pulmonary vein in having:
Arteries are best defined as the vessels which:
Given below are three statements (I–III) regarding the human blood circulatory system.
(I) In the treatment of angina pectoris, nitrous oxide and nitroglycerine are used.
(II) Veins have thinner walls and broader lumen than arteries.
(III) Artificial pacemakers are used in arrhythmia.
How many of the above are correct statements?
