1. (i) Name the parts '1' to '5' indicated by guidelines.   2. (ii) What term is given to the period of development of the foetus in the womb?   3. (iii) How many days does the foetus take to be fully developed?   4. (iv) Mention two functions of the parts labelled '2' other than its endocrine function.   5. (v) Name the hormone (any one) produced by the part labelled '2'.   6. (vi) What is the function of the part marked '3'?