Other than the kidneys, lungs, liver and skin also help in th elimination of excretory wastes. Which of the following statements are not true?

(i) Our lungs remove large amounts of CO 2 200 ml/min and also significant quantities of water every day.

(ii) Liver, the largest gland in our body, secretes bile-containing substances like bilirubin, biliverdin, cholesterol, degraded steroid hormones, vitamins and drugs.

(iii) The sweat and sebaceous glands in the skin can eliminate certain substances through their secretions.

(iv) Sweat produced by the sweat glands is a watery fluid containing NaCl, large amounts of urea, citric acid, etc.

(v) Primary function of sweat is the removal of some of the wastes mentioned above, it aslo facilitate a cooling effect on the body surface.

(vi) Sebaceous glands eliminate certain substances like sterols, hydrocarbons and waxes through sebum.