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simple tubular or simple straight tubular [3] or straight tubular [4] the gland is a uniform tube Small intestine (Crypts of Lieberkühn), uterine glands: coiled tubular or simple coiled tubular [5] the gland is coiled without losing its tubular form sweat glands: simple branched tubular [6] or compound tubular [7] branching occurs in the tubes
Uterine glands or endometrial glands are tubular glands, lined by a simple columnar epithelium, found in the functional layer of the endometrium that lines the uterus. Their appearance varies during the menstrual cycle. During the proliferative phase, uterine glands appear long due to estrogen secretion by the ovaries.
The glands and intestinal villi are covered by epithelium, which contains multiple types of cells: enterocytes (absorbing water and electrolytes), goblet cells (secreting mucus), enteroendocrine cells (secreting hormones), cup cells, myofibroblast, tuft cells, and at the base of the gland, Paneth cells (secreting anti-microbial peptides) and ...
Simple cuboidal epithelium is a type of epithelium that consists of a single layer of cuboidal (cube-like) cells which have large, spherical and central nuclei. Simple cuboidal epithelium is found on the surface of ovaries , the lining of nephrons , the walls of the renal tubules , parts of the eye and thyroid , and in salivary glands .
During pregnancy, the glands and blood vessels in the endometrium further increase in size and number. Vascular spaces fuse and become interconnected, forming the placenta, which supplies oxygen and nutrition to the embryo and fetus. [4] [5] The speculated presence of an endometrial microbiota [6] has been argued against. [7] [8]
The expansion of the absorptive surface, 600 times beyond that of a simple cylindrical tube, is achieved by three anatomical features: [6] Circular folds are transverse folds that slow the passage of the luminal contents and serve to expand the total surface area threefold. Villi and intestinal glands serve to increase the mucosal surface area ...
The former first lady was notably absent from President Jimmy Carter's state funeral service, leading Barack Obama and Donald Trump to be seated next to one another
Simple columnar epithelium is a single layer of columnar epithelial cells which are tall and slender with oval-shaped nuclei located in the basal region, attached to the basement membrane. In humans, simple columnar epithelium lines most organs of the digestive tract including the stomach , and intestines .