PacSun USA Customer Service Phone Number. Phone Number of PacSun USA is +1 (714) 414-4909, (714) 414-4000 . Pacific Sunwear of California Incorporation is commonly known as PacSun. Pacsun is a leading company with Nationwide position in retailing industry.
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.
Most hormones are secreted from endocrine glands. An endocrine gland is a ductless gland in which glandular cells secrete hormones directly into the bloodstream and interstitial fluid. Pancreas-is both and endocrine and exocrine gland. Exocrine glands are not part of the endocrine system.