Cosmetology · Anatomy and Physiology

What is the largest organ of the human body?

Correct answer

The skin

  1. A The brain
  2. B The skin
  3. C The heart
  4. D The liver

Why this is the answer

The skin is the largest organ of the human body. It performs many functions: protection (a barrier against the environment and pathogens), sensation (through nerve endings), heat regulation (through blood flow and sweating), excretion (of small amounts of waste through sweat), secretion (of sebum/oil), and absorption (limited). Because the skin is central to so many cosmetology services, understanding its functions and importance is a fundamental part of the scientific-concepts content tested on the exam.
Source: Scientific Concepts — Skin as an Organ

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About this topic: Anatomy and Physiology

Anatomy and physiology questions cover cells and tissues, the skeletal, muscular, nervous and circulatory systems, and specifically the bones, muscles and nerves of the head, face, arms and hands that salon services affect. This is one of 9 Scientific Concepts questions on anatomy and physiology, each with a full explanation on a single study page.

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