Arkansas Esthetician Practice Exam 2026 - Free Esthetician Practice Questions and Study Guide

Langerhans cells are specialized cells found in the skin that play a vital role in our innate immune system. Their main function is to identify and capture foreign invaders such as bacteria, viruses, and other harmful substances, and present them to the other cells of our immune system for destruction. This helps protect the body from infection and plays a crucial role in our overall health. The other options are incorrect because they are functions of other cells or systems in the body. Melanocytes are responsible for giving skin its color, sweat glands produce sweat to help regulate body temperature, and the hypothalamus and nervous system are primarily responsible for regulating body temperature. Therefore, the correct answer is A.