Final answer:
Modified apocrine sweat glands are found in axillary and genital regions and produce secretions that result in body odor after bacterial breakdown. The secretion's bactericidal properties, including lysozyme and antimicrobial peptides, help inhibit microbial growth and protect the skin.
Step-by-step explanation:
Modified apocrine sweat glands are predominantly found in the axillary (armpits) and genital areas of the body. These glands are larger than eccrine sweat glands and are associated with hair follicles. Apocrine sweat glands produce a fatty secretion that, when broken down by bacteria on the skin, results in body odor. The secretion from these glands includes not only water and salts but also organic compounds that make the sweat more susceptible to bacterial decomposition. The bactericidal action of apocrine secretion is essential because it contains substances such as antimicrobial peptides and lysozyme, which inhibit the growth of these bacteria and play a protective role for the skin.
The release of apocrine sweat is under both nervous and hormonal control, which also contributes to the human pheromone response. However, due to perspiration's moisture, it can increase the potential for microbial growth, especially in sweat-abundant areas like the underarms and groin. Therefore, the antibacterial properties of sweat, which include lysozyme and antimicrobial peptides, are crucial for preventing infection by creating an inhospitable environment for pathogens.