The blood pressure of a normal human being is found to be 120/80 mmHg. These "numbers' represent the blood pressure at

The normal systolic pressure in human beings is:

Which one of the following proteins is present in human hair and nails?

The number of teeth that are developed twice in the lifetime of human being is

Which one of the following is NOT a component of human male reproductive system ?

Which one of the following radio elements is used to measure the speed of the blood flow in the human body?