Pennsylvania Esthetician State Board Practice Exam

Which area of science focuses on the functions of the skin?

1. Dermatology

2. Skin Physiology

3. Cosmetology

4. Histology

The correct answer is: Skin Physiology

Skin physiology is the area of science that specifically examines the functions and mechanisms of the skin. It dives into how the skin operates on a cellular and systemic level, exploring aspects such as skin barrier function, hydration, thermoregulation, and sensory perception. Understanding skin physiology is crucial for estheticians, as it helps them assess skin health, address skincare needs, and apply appropriate treatments based on how the skin functions. Dermatology primarily deals with skin diseases, disorders, and medical treatments, focusing more on pathology rather than the functional aspects of the skin. Cosmetology encompasses a broader scope, including hair and nail care, alongside skincare, rather than isolating the functions of the skin itself. Histology involves the study of tissues at a microscopic level but does not specifically focus on the functions of the skin or its physiological processes. Therefore, skin physiology is the most accurate choice in this context.