Which of the following is the smallest bone in the human body?

Which one of the following salts is found in maximum amount in the human bones?

Which one of the following statements best describes the role of B cells and T cells in the human body?

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

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

Which one of the following body parts/organs of the human body does not have smooth muscles?