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25 Cards in this Set
- Front
- Back
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glands |
individual cells or multicellular organs composed predominantly of epithelial tissue. they secrete |
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endocrine glands |
lack ducts and secrete their products directly into the interstitial fluid and bloodstream |
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exocrine glands |
originate from an invagination of epithelium that burrows into the deeper connective tissues. they maintain their contact with epithelial surface bu means of a duct |
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duct |
an epithelium-lined tube through which secretions of the glands are discharged onto the epithelial surface |
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exocrine gland structure |
unicellular or multicellular. |
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unicellular exocrine gland |
an individual cell located within an epithelium that is predominantly nonsecretory. do not contain a duct and located close to the surface. most common type is a goblet cell |
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multicellular exocrine gland |
composed of numerous cells that work together to produce a secretion and secrete it onto the surface of an epithelium. may consist of acini and one or more smaller ducts to merge a larger duct |
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acini |
sacs that produce the secretion |
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capsule |
most multicellular exocrine glands are enclosed within one |
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septa |
extensions of a capsule |
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lobes |
parts of an exocrine gland that are partitioned |
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lobules |
further divisions of the septa within each lobe |
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stroma |
the connective tissue framework of the exocrine gland |
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parenchyma |
the functional cells of the gland that produce and secrete the gland products |
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simple glands |
hand a single, unbranched duct |
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compound glands |
exhibit branched ducts |
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tubular |
if the secretory portion and the duct are of uniform diameter |
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acinar |
if the secretory cells form an expanded sac |
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tubloacinar gland |
a gland with both secretory tubules and secretory acini |
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serous glands |
produce and secrete a nonviscous, watery fluid, such as sweat, milk, tears, or digestive juices |
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mucous glands |
secrete mucin, which forms mucous when mixed with water |
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mixed glands |
contain both serous and mucous cells |
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merocrine glands |
package their secretions in structures called secretory vesicles |
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holocrine glands |
formed from cells that accumulate a product and then the entire cell disinegrates |
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apocrine glands |
composed of cells that accumulate their secretory products within the apical portion of their cytoplasm |
