where are acinar cells found?
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Acinar cells are the exocrine (exo=outward) cells of the pancreas that produce and transport enzymes that are passed into the duodenum where they assist in the digestion of food.
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Choanocytes (also known as "collar cells") are cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or cilium, surrounded by a collar of microvilli which are connected by a thin membrane. They make up Choanoderm, a type of cell layer found in sponges.
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Saliva is produced in and secreted from salivary glands. The basic secretory units of salivary glands are clusters of cells called an acini. These cells secrete a fluid that contains water, electrolytes, mucus and enzymes, all of which flow out of the acinus into collecting ducts.
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These acinar cells are specialised in enzyme synthesis, storage and secretion. The duct system modifies the aqueous secretions. This mechanism is stimulated by the parasympathetic system and inhibited by the sympathetic system.
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Mucoserous acini (singular acinus) or mixed acini are mainly present in submandibular and sublingual glands. They are formed by mucous cells with some serous cells interspersed each other.
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A pulmonary alveolus (plural: alveoli, from Latin alveolus, "little cavity") is a hollow cup-shaped cavity found in the lung parenchyma where gas exchange takes place. Lung alveoli are found in the acini at the beginning of the respiratory zone. ... Different structures are involved in gas exchange in other vertebrates.
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The open APUD cell is the most common type of endocrine cell in the gastrointestinal tract. It is found in areas extending from the pyloric antrum to the rectum. These cells sense chemical substances in the food. Thus they behave as chemoreceptors or 'taste' cells.
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G-cells are neuroendocrine cells responsible for the synthesis and secretion of gastrin. They are primarily found in the pyloric antrum but can also be found in the duodenum and the pancreas.
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The target cells of neurons include other nerve cells in the brain, spinal cord, and autonomic ganglia, and the cells of muscles and glands throughout the body.
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The epithelial cells are nourished by substances diffusing from blood vessels in the underlying connective tissue. One side of the epithelial cell is oriented towards the surface of the tissue, body cavity, or external environment and the other surface is joined to a basement membrane.
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The juxtaglomerular cells (JG cells, or granular cells) are cells in the kidney that synthesize, store, and secrete the enzyme renin. They are specialized smooth muscle cells mainly in the walls of the afferent arterioles (and some in the efferent arterioles) that deliver blood to the glomerulus.
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['K cell. K cells secrete gastric inhibitory peptide, an incretin, which also promotes triglyceride storage.', 'L cell. ... ', 'I cell. ... ', 'G cell. ... ', 'Enterochromaffin cell. ... ', 'Enterochromaffin-like cell. ... ', 'N cell. ... ', 'S cell.']
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An acinus (from Latin, grape) is a small ball of secretory epithelial cells containing a tiny central lumen. Acini are usually formed by serous cells. [Acini are sometimes called alveoli, from L., small cavity.] A typical acinar cell is shaped like a pyramid.
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Agger nasi air cells are the most anterior ethmoidal air cells lying anterolateral and inferior to the frontal recess and anterior and above the attachment of the middle turbinate. They are located within the lacrimal bone and therefore have as lateral relations the orbit, the lacrimal sac and the nasolacrimal duct.
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The pancreas is solid (acinar tissues), and contains drainage tubes (the pancreatic ductal system). The pancreatic juices are made in the acinar tissues, and passed by secretion into the tubes (ducts) for transport into the duodenum. The exit hole into the duodenum is called the papilla of Vater.
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Melanocytes are melanin-producing neural crest-derived cells located in the bottom layer (the stratum basale) of the skin's epidermis, the middle layer of the eye (the uvea), the inner ear, vaginal epithelium, meninges, bones, and heart. Melanin is a dark pigment primarily responsible for skin color.
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['Epithelial Cells. These cells are tightly attached to one another. ... ', 'Nerve Cells. These cells are specialized for communication. ... ', 'Muscle Cells. These cells are specialized for contraction. ... ', 'Connective Tissue Cells.']