Which type of glands are primarily located in the genital and axillary areas and are often associated with odor?

Apocrine glands are specifically located in the genital and axillary regions of the body. These glands are responsible for producing a thicker, milky secretion that is rich in proteins and lipids. The secretion from apocrine glands is odorless when released, but when it comes into contact with skin bacteria, it can lead to body odor.

This particular characteristic of apocrine glands makes them notable for their association with odor, which is not a feature of the other types of glands mentioned. For instance, merocrine glands, which are more widely distributed across the body, produce a watery sweat that primarily serves to regulate body temperature and does not typically contribute to body odor. Holocrine glands, on the other hand, secrete their entire cell contents, but they are more related to sebaceous glands found in the skin rather than the odor association. Exocrine glands encompass all glands that secrete substances externally but do not specifically indicate the relationship to odor or location. Thus, apocrine glands are the definitive choice when considering odor production in specific body areas.