The human body does not produce `:`

Which part of the human body vibrates to produce sounds?

Name the two waste products of the human body which are produced in the body cells

Which part of the human body : (a) produces sperms ? (b) produces ova? (c) passes sperms from a man to a woman ?

Which substance when introduced into the human body produces antibody?

How does the human body protect itself from infection?

In which cells of humans body does HIV replicates?