The use of iodized salt is recommended to prevent:

The underactive endocrine gland which causes goitre is:

The endocrine gland whose malfunctioning causes diabetes disease is:

Which of the following are often called glands of emergency?

P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.

(a) What is P? Name five organs which contain cells (or group of cells) like P.

(b) Name the nerves Q.

(c) What is R? Give two examples of R.

(d) Name nerves S.

(e) How do messages travel through the nerves Q and S?