Brown and white photograph of a nipple with hair
The nipple-areolar complex (NAC)—an important anatomical structure—is the pigmented area in the most prominent part of the breast. Within this region, there are sweat glands, sebaceous glands, Montgomery tubercles, hair follicles, and smooth muscle. This region also includes many sensory nerve endings and can be considered an erogenous zone for many people. The NAC’s dimension, texture, and color can vary greatly across ethnic groups and individuals.
Lyons, D., Wahab, R. A., Vijapura, C., & Mahoney, M. C. (2021). The nipple-areolar complex: comprehensive imaging review. Clinical Radiology, 76(3), 172-184. https://doi.org/10.1016/j.crad.2020.09.013
Pigmented epithelium. (2003). Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. https://medical-dictionary.thefreedictionary.com/pigmented+epithelium