Cosmetology · Skin Science

Which of the following is a primary function of the skin?

Correct answer

Protection, sensation, and heat regulation

  1. A Pumping blood
  2. B Digesting food
  3. C Protection, sensation, and heat regulation
  4. D Producing red blood cells

Why this is the answer

Primary functions of the skin include protection (acting as a barrier against the environment, microbes, and water loss), sensation (detecting touch, pressure, heat, cold, and pain through nerve endings), and heat regulation (controlling body temperature via blood flow and sweating), along with secretion of sebum, limited excretion, and limited absorption. The skin does not produce blood cells, digest food, or pump blood. Understanding the skin's core functions underpins safe and effective skincare services and is foundational exam content.
Source: Scientific Concepts — Skin Functions

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About this topic: Skin Science

Skin science covers the layers of the skin, its functions and appendages, skin types, and the lesions and disorders a cosmetologist must recognise, including signs that need medical referral. This is one of 7 Scientific Concepts questions on skin science, each with a full explanation on a single study page.

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