Certified Tumor Registrar (CTR) Practice Exam

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Prepare for the Certified Tumor Registrar Exam with flashcards and multiple choice questions, complete with hints and explanations. Master your exam preparation and gain confidence!

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Which organ is considered the largest in the human body?

Liver
Skin
Lung
Heart

The correct answer is: Skin

The skin is recognized as the largest organ in the human body. It serves multiple critical functions, including protecting underlying tissues and organs, regulating body temperature, and enabling the sensation of touch, heat, and cold. The skin covers the entire body, making it extensive in both surface area and mass compared to other organs. In contrast, while the liver, lungs, and heart are significant in terms of their functions and roles within the body, they do not surpass the skin in size. The liver is the largest internal organ, but it does not match the skin's overall coverage. The lungs are crucial for respiration and the heart is vital for circulation, yet none of these organs can compare to the skin when it comes to sheer size. This distinction emphasizes the unique role of the skin in anatomy and physiology, highlighting its importance beyond just being an organ but also as a protective barrier for the entire body.