hikirauhasen
Hikirauhasen, scientifically known as a sweat gland, is a microscopic tubular structure located in the dermis of the skin. Its primary function is to produce and secrete sweat, a bodily fluid composed mainly of water and electrolytes, along with trace amounts of other substances like urea and lactic acid. The human body contains millions of these glands, distributed across virtually all skin surfaces, though their density varies, being particularly high on the palms, soles, and forehead. There are two main types of sweat glands: eccrine and apocrine. Eccrine glands are widespread and primarily involved in thermoregulation, releasing a watery sweat that evaporates from the skin's surface, thus cooling the body. Apocrine glands, found mainly in the axillary (armpit) and genital regions, develop at puberty and produce a thicker, milky secretion that can be metabolized by skin bacteria, contributing to body odor. The regulation of sweat production is controlled by the sympathetic nervous system and is influenced by factors such as temperature, physical activity, emotional state, and hormonal changes.