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Alveolar glands, also called saccular glands, are glands with a saclike secretory portion, in contrast with tubular glands. They typically have an enlarged lumen (cavity), hence the name: they have a shape similar to alveoli , the very small air sacs in the lungs.
Tubular glands are glands with a tube-like shape throughout their length, in contrast with alveolar glands, which have a saclike secretory portion. [ 1 ] [ 2 ] Tubular glands are further classified as one of the following types:
Bulbourethral glands, Cowper's glands, Mery's glands penis, base pre-ejaculate: tubulo-alveolar 6 Ceruminous gland: ear: cerumen: 7 Ciaccio's glands, accessory lacrimal glands: eye: tears: 8 Cobelli's glands: esophagus, just above the cardia, in the mucosa: mucous 9 Ebner's glands: tongue: serous: 10 Eccrine sweat glands: skin: coiled tubular ...
A gland is a cell or an organ in an animal's body that produces and secretes different substances that the organism needs, either into the bloodstream or into a body cavity or outer surface. [1] A gland may also function to remove unwanted substances such as urine from the body. [2] There are two types of gland, each with a different method of ...
the salivary glands of the tongue [2] the liver; the lacrimal glands; the mammary glands; the pancreas [3] the bulbourethral (Cowper's) glands; The thyroid follicles can also be considered of acinar formation but in this case the follicles, being part of an endocrine gland, act as a hormonal deposit rather than to facilitate secretion.
In humans the glands are known as the esophageal submucosal glands and are a part of the human digestive system. [1] They are a small compound racemose exocrine glands of the mucous type. [citation needed] There are two types: Esophageal submucosal glands are compound tubulo-alveolar glands. Some serous cells are present.
These cells typically form spherical or tubular structures called acini (singular: acinus), which are the basic functional units of exocrine glands. Histologically, serous acinar cells exhibit: A round, basally located nucleus
The mucous salivary glands are similar in structure to the buccal and labial glands. They are found especially at the back part behind the vallate papillae, but are also present at the apex and marginal parts. In this connection, the anterior lingual glands require special notice.