Sweat glands are exocrine glands distributed throughout the body surface. They consist of secretory and duct segments surrounded by myoepithelial cells. Glands open into skin surface or hair follicles (apocrine glands)
Hormones regulate body functions including growth, metabolism, and reproduction. Hormones are produced by various glands and released into bloodstream. Hormonal communication differs from nervous system's rapid responses
Hormones are non-nutrient chemicals that act as intercellular messengers. Phytohormones regulate plant growth and are derived from gases, terpenes, indole, carotenoids and adenine. Animal hormones are synthesized by endocrine glands throughout the body
Glands are organized arrangements of secretory cells. Most glands are epithelial tissue with secretory cells organized into tubules, acini, or cords. Exocrine glands secrete products through ducts, endocrine glands secrete into blood
Two small exocrine glands located near urethra below prostate. Each gland is pea-sized, up to 18 cm long in boars. Composed of lobules with acini lined by columnar epithelial cells. Enclosed by sphincter urethrae membranaceae muscle fibers
Hormones are signaling molecules regulating physiology and behavior in multicellular organisms. Hormones include eicosanoids, steroids, amino acids, proteins, and gases. Hormones communicate between organs and tissues