Blog

Which of the following waves is likely to be absent in a normal frog ECG? (1) P (2) Q (3) T (4) R   Introduction to Frog ECG Wave Patterns […]

The S wave of normal human ECG originates due to (1) septal and left ventricular depolarization. (2) late depolarization of the ventricular walls moving back toward the AV junction. (3) […]

The T-waves of ECG indicates (1) Atrial depolarization. (2) Ventricular depolarization (3) Ventricular repolarization (4) Atrial depolarization   What Does the T Wave Represent on an ECG? The T wave in an […]

Following are the statements made about major functions of some of the neuroglia in normal condition: (A) Oligodendrocytes help maintain K+ level, and contribute to the blood—brain barrier. (B) Microglia […]

The pericytes are found in (1) myelin sheath (2) surrounding coat of a skeletal muscle fibre, (3) blood capillary wall (4) lymph capillary wall   Where Are Pericytes Found? Pericytes are […]

Which one of the following causes constriction of blood vessels? (1) Carbon monoxide (2) Nitric oxide (3) Endothelin – 1 (4) Atrial natriuretic peptide   Which Substance Causes Blood Vessel […]

Which one of the following is NOT secreted by capillary endothelium? (1) Prostacyclin (2) Guanosine (3) Endothelin (4) Nitric oxide   The capillary endothelium is a single layer of cells lining the […]

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 […]