Tag: CSIR NET Life Science Previous Year Questions and Solution on Cardiovascular System

Atrial natriuretic factor secreted from atria is a (1) Hormone (2) Neurotransmitter (3) Enzyme (4) Growth factor   What is Atrial Natriuretic Factor (ANF)? Atrial Natriuretic Factor, also known as Atrial […]

In an experiment on healthy young men, the muscarinic receptor antagonist, atropine was administered to one group (Group A) while the P-adrenergic receptor antagonist, propranolol was administered to another group […]

(A) In an experiment, 2mg of a substance ‘A’ dissolved in 4.5 ml sterile solvent was injected as a bolus into the femoral vein of an intact frog. It was […]

Parasympathetic control of the heart via the vagus nerve is the primary mechanism that regulates beat-to-beat control of heart rate. Neurotransmitter released by vagus nerve is (1) Adrenaline (2) Acetyl […]

Thyroid hormone (T3) increases the heart rate and the force of contraction of cardiac muscles. The mechanisms of these effects of T3 have been explained by a researcher in the […]

The following statements were proposed by a researcher on the characteristic features of stretch receptors in atria and the effect of these receptors’ activity on blood pressure regulation: A. The […]

The arterial pressure usually raises and falls 4 to 6 mm Hg in a wave like manner causing “respiratory waves”. The probable mechanism of these waves has been proposed in […]

The heart rate shows variation during respiratory rhythm in most human subjects. Which one of the following statements describing the changes of heart rate during respiratory phases is true? (1) […]

An isolated carotid sinus was prepared so that the pressure may be regulated by a pump and the resulting discharge in single carotid sinus nerve fibre could be recorded. The […]

19. The discharge patterns in a single afferent nerve fibre from carotid sinus at various levels of mean arterial pressure (MAP) are plotted against changes in aortic pressure with time […]