Topics: Circulation and Excretion Quiz
The principal nitrogenous excretory compound in humans is synthesised
A. In kidneys but eliminated mostly through liver
B. In liver and also eliminated by the same through bile
C. In kidneys as well as eliminated by kidneys
D. In the liver but eliminated mostly through kidneys
Select your answer:

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Health and Medicine The Cardiovascular System OCR A-level Physiology Cell Theory Bacteria & Viruses PHE Inflammation and Tissue Repair The nervous system & brain Medical Careers Muscles and Movements Regulating the Cell Cycle Cartilage Human Eye and Colourful World Musculoskeletal Anatomy: Knee -ologyOther quiz:
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A. Astrocytes
B. Dopamine neurons
C. Microglial cells
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What is protected by the skull?
A. Lungs
B. Brain
C. Heart
D. Head