Histology is the study of what?

• A. Microscopic anatomy
• B. Gross anatomy
• C. Physiology
• D. Embryology

Answer: (A)

Histology is microscopic anatomy—the study of tissues and cells at the small scale, including how they're organized and how their structure relates to function. It involves looking at tissue sections under a microscope to see the different cell types and layers, such as epithelial surfaces, connective tissue, muscle, and nervous tissue. This helps explain how skin and other tissues are built and how they work, which is why it’s important in esthetics when considering layers like the epidermis and dermis and structures within them. The other options describe different areas: gross anatomy is what you can see without a microscope, physiology deals with function, and embryology studies development from embryo to fetus.