Main organs of the nervous system are:

  Which of the following is a ball and socket joint?

Man is able to bend because of

Erect posture of human body is possible because of:

  What percent of our body weight do the muscles make?

Which is the largest bone in our body?

What is protected from sudden shocks by the skull?

What enables man to think?

Number of bones in an adult:

Which of these systems help to digest food?