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Acinar exocrine glands are found in many organs, including: the stomach [1] the sebaceous gland of the scalp; the salivary glands of the tongue [2] the liver; the lacrimal glands; the mammary glands; the pancreas [3] the bulbourethral (Cowper's) glands
They contain serous acini, a grouping of serous cells that secrete serous fluid, isotonic with blood plasma, that contains enzymes such as alpha-amylase. Serous glands are most common in the parotid gland and lacrimal gland but are also present in the submandibular gland and, to a far lesser extent, the sublingual gland .
skin: coiled tubular 11 Esophageal glands: esophagus: mucous racemose 12 Exocrine pancreas: pancreas: serous tubulo-acinar 13 Gastric chief cell, Wasmann's glands stomach: serous 14 Glomus coccygeum, coccygeal gland, Luschka's gland or gangliona coccyx, near the tip 15 Goblet cells: digestive tract, respiratory tract: mucous simple unicellular ...
These are the compound tubular, compound acinar, and compound tubulo-acinar glands. Every gland is formed by an ingrowth from an epithelial surface. This ingrowth may in the beginning possess a tubular structure, but in other instances glands may start as a solid column of cells which subsequently becomes tubulated. [3]
Merocrine – the cells of the gland excrete their substances by exocytosis into a duct; for example, pancreatic acinar cells, eccrine sweat glands [dubious – discuss], salivary glands, goblet cells, intestinal glands, tear glands, etc. Apocrine – the apical portion of the cytoplasm in the cell membrane, which contains the excretion, buds off.
The exocrine pancreas is one of two compartments that include digestive-acting acinar cells and duct cells.They represent an extension of the intercalated duct into each pancreatic acinus. [1] These cells are commonly known as duct cells, and secrete an aqueous bicarbonate solution under stimulation by the hormone secretin. They also secrete ...
Ectodermal dysplasia can present a lack of sweat glands. [74] Fabry disease, characterized by excess globotriaosylceramide (GL3), causes a decrease in sweat gland function due to GL3 deposits in the eccrine glands. [75] GM 1 gangliosidoses, characterized by abnormal lipid storage, leads to vacuolization in eccrine sweat gland cells. [76]
Each acinus consists of a single layer of cuboidal epithelial cells surrounding a lumen, a central opening where the saliva is deposited after being produced by the secretory cells. The three forms of acini are classified in terms of the type of epithelial cell present and the secretory product being produced - serous, mucoserous, and mucous.