Anatomy & Physiology Question #49

Question

What layer of the epidermis causes the dips and ridges of fingerprints?

Answers

  1. Stratum germinativum
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  2. Stratum lucidum
    • Rationale:
  3. Stratum corneum
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  4. Stratum fundus
    • Rationale:

Overview

Explanation

The correct answer is A. The fingerprints are formed by “waves” in the papillary, or stratum germinativum, layer of the epidermis, that then pushes the outer layer of the epidermis up in the patterns we see as fingerprints.Stratum lucidum and stratum corneum are inaccurate terms and the stratum fundus is not a word that is used in human anatomy.

Learning Outcomes

Test Taking Tip

Video Rationale