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type of sweat gland. in perspiration. When the body temperature rises, the sympathetic nervous system stimulates the eccrine sweat glands to secrete water to the skin surface, where it cools the body by evaporation. Thus, eccrine sweat is an important mechanism for temperature control.
Quick Answer. According to Central Virginia Community College, endocrine glands secrete hormones into their internal environment and lack ducts. By contrast, exocrine glands secrete substances, such as wax, saliva and enzymes, into their external environment via ducts. The University of Leeds explains that both types of glands are comprised of secretory epithelial cells.