Exocrine gland - wikipedia Exocrine gland Exocrine gland An acinus is a round cluster of exocrine cells connected to a duct. Details Identifiers Latin glandula exocrina MeSH D005088 TH H2. 00.02. 0.03014 FMA 9596 Anatomical terminology ( edit on Wikidata ) Exocrine glands are glands that produce and secrete substances onto an epithelial surface by way of a duct. Examples of exocrine glands include sweat, salivary, mammary, ceruminous, lacrimal, sebaceous, and mucous. Exocrine glands are one of two types of glands in the human body, the other being endocrine glands, which secrete their products directly into the bloodstream. The liver and pancreas are both exocrine and endocrine glands ; they are exocrine glands because they secrete products -- bile and pancreatic juice -- into the gastrointestinal tract through a series of ducts, and endocrine because they secrete other substances directly into the bloodstream. Contents 1 Classification 1.1 By structure 1.2 By method of secretion 1.3 By product secreted 2 Additional images 3 See also 4 References 5 External links Classification By structure Exocrine glands contain a glandular portion and a duct portion, the structures of which can be used to classify the gland. The duct portion may be branched ( called compound ) or unbranched ( called simple ). The glandular portion may be tubular or acinar, or may be a mix of the two ( called tubuloacinar ). If the glandular portion branches, then the gland is called a branched gland. By method of secretion Exocrine glands are named apocrine glands, holocrine glands, or merocrine glands based on how their products are secreted. Merocrine secretion -- cells excrete their substances by exocytosis ; for example, pancreatic acinar cells. Apocrine secretion -- a portion of the cell membrane that contains the excretion buds off. Holocrine secretion -- the entire cell disintegrates to excrete its substance ; for example, sebaceous glands of the skin and nose. By product secreted Serous cells secrete proteins, often enzymes. Examples include gastric chief cells and Paneth cells Mucous cells secrete mucus. Examples include Brunner 's glands, esophageal glands, and pyloric glands Mixed glands secrete both protein and mucus. Examples include the salivary glands : although the parotid gland 20 % is predominantly serous, the sublingual gland 5 % mainly mucous gland, and the submandibular gland 70 % is a mixed, mainly serous gland. Sebaceous glands secrete Sebum, a lipid product. These glands are also known as oil glands, e.g. Fordyce spots and Meibomian glands. Additional images Section of the human esophagus. Dissection of a lactating breast. See also List of glands of the human body List of specialized glands within the human integumentary system References ^ Jump up to : Young B, Woodford P, O'Dowd G ( 2013 ). Wheater 's Functional Histology : A Text and Colour Atlas ( 6th ed. ). Elsevier. p. 95. ISBN 978 - 0702047473. External links Diagram at mhhe.com hide Epithelial tissue Cells Squamous Cuboidal Columnar Types Simple squamous epithelium Endothelium Mesothelium Simple cuboidal epithelium Simple columnar epithelium Pseudostratified columnar epithelium Respiratory epithelium Stratified squamous epithelium Stratified cuboidal epithelium Stratified columnar epithelium Transitional epithelium Urothelium Glands Types Mechanism Merocrine Eccrine Apocrine Holocrine Sebaceous Meibomian Shape Tubular gland Alveolar gland Secretion Serous glands Mucous glands Components Myoepithelial cell Serous demilune Ducts : Interlobar Interlobular Intralobular Striated Intercalated Acinus / Lobe Retrieved from `` https://en.wikipedia.org/w/index.php?title=Exocrine_gland&oldid=836105443 '' Categories : Exocrine system Hidden categories : Pages with unresolved properties Talk Contents About Wikipedia Afrikaans Azərbaycanca বাংলা Bân - lâm - gú Català Čeština Deutsch Español Euskara فارسی Français Galego 한국어 हिन्दी Hrvatski Bahasa Indonesia Íslenska Italiano עברית Kapampangan Қазақша Latviešu Limburgs Magyar Nederlands 日本 語 Norsk nynorsk Oʻzbekcha / ўзбекча Português Русский Shqip Simple English Slovenščina کوردی Suomi Svenska தமிழ் Türkçe Українська 粵語 中文 33 more Edit links This page was last edited on 12 April 2018, at 18 : 20. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: which type of gland secretes its product directly into the bloodstream
Answer: endocrine glands