Role of other Organs in Excretion — Prelims Questions

Which of the following is NOT a primary excretory product eliminated by the human skin?

The conversion of highly toxic ammonia into less toxic urea primarily occurs in which organ?

Which of the following substances is primarily eliminated by the lungs as an excretory product?

Which of the following is a component of sebum secreted by sebaceous glands?

A patient suffering from severe liver cirrhosis might exhibit elevated levels of which of the following in their blood due to impaired excretory function of the liver?

Which of the following statements about the excretory role of salivary glands is correct?