Norepinephrine
(i)  is released by sympathetic fibres
(ii)  is released by parasympathetic fibers
(iii) increases the heart rate
(iv) decreases blood pressure.

Which of the above statements are correct?

Which of the following represents the action of insulin?

A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin. This is the result of

Figure shows human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristic and/or functions.