Synonym: PITUITARY GLAND: Hormones secreted by the anterior and posterior pituitary gland, along with target organs. The only known disease of the adrenal medulla is a tumour known as a pheochromocytoma.

Calcium is removed from bones, resulting in increased fragility.

Omissions? Thyroid follicles consist of a ring of follicular cells surrounding a space filled with a clear colloid (a mixture of thyroglobulin proteins and iodine), from which the thyroid hormones (thyroxine and related molecules) are synthesized. Know your HNGs from your FWBs? It is a tubuloalveolar gland located in the orbit, superior and lateral to the eyeball, and consists of a large superior portion (pars orbitalis) and a smaller inferior portion (pars palpebralis). A large endocrine gland located in the center of the base of the neck. Androgen excess in women is characterized by excessive hair growth on the face and other regions and amenorrhea; in contrast, androgen excess has few effects in men. Q. The entire gland is enclosed in a tough connective tissue capsule from which trabeculae extend into the cortex. The secretion of cortisol is regulated by the classical hypothalamic-pituitary-adrenal feedback system. Copyright © 2011. “Epidemic” vs. “Pandemic” vs. “Endemic”: What Do These Terms Mean? Posterior lobe deficiency or hypothalamic lesion causes diabetes insipidus. Therefore, serum thyroxine and triiodothyronine concentrations do not change, nor do serum thyrotropin concentrations. Any of the simple, coiled, tubular glands found on all body surfaces except the margin of the lips, glans penis, and inner surface of the prepuce. Corticotropin also stimulates the secretion of adrenal androgens from the adrenal cortex, but the androgens do not inhibit corticotropin secretion. As many as 10…. Any of the dilated mucous glands in the uterine cervix. In adult humans the outer cortex comprises about 90 percent of each adrenal gland. It is intimately related to adjustments of the body in response to stress and emotional changes. The endocrine glands include the adrenals, the parathyroids, the pineal, the pituitary, and the thyroid. A collection of cells whose function is to release certain chemicals, or hormones, which are important to the functioning of other, sometimes distantly located, organs or body systems.
Each of the 15 to 20 main ducts, known as lactiferous ducts, discharges through a separate orifice on the surface of the nipple. Like exocrine and paracrine cells, endocrine cells are stimulated and inhibited by autonomic axons; the activities of endocrine cells are also modulated by circulating hormones, especially pituitary hormones. Organized aggregation of cells functioning as a secretory or excretory organ. adj., adj glan´dular. Endocrine health disorders usually result from the production of either too much or too little of a hormone. “Corporal,” “General,” “Sergeant,” “Private”: What’s The Order Of The Military Ranks? Any of the sweat glands in the axillae and pubic region that open into hair follicles rather than directly onto the surface of the skin as do eccrine sweat glands. a cell or organ in man and other animals that synthesizes chemical substances and secretes them for the body to use or eliminate, either through a duct (exocrine gland) or directly into the bloodstream (endocrine gland) See also exocrine gland… The gland that secretes tears. In warm-blooded animals, no effects are known. The symptoms and signs of aldosterone excess include not only hypertension but also muscle weakness and cramps and increased thirst and urination.

These small glands are named by their locations, e.g., buccal salivary glands, lingual glands, although some glands are also known by the name of their original describers, and von Ebner glands, which are lingual salivary glands found in the circumvallate papillae of the tongue. (Mechanical Engineering) a device that prevents leakage of fluid along a rotating shaft or reciprocating rod passing through a boundary between areas of high and low pressure. A multicellular gland in which the cells secrete specific molecules into a cylindrical sac. These cells migrate to the adrenal medulla from the embryonic neural crest and represent specialized neural tissue. An aggregation of cells which secretes or excretes a substance. A gland, such as a sebaceous gland of the skin, in which the secretory cells release intracellular macromolecules by disintegration of their cell membranes; these cells then die. Their lipid-rich secretions coat the shafts of lashes. Anatomy . The renin-secreting cells, which compose the juxtaglomerular apparatus, are sensitive to changes in blood flow and blood pressure, and the primary stimulus for increased renin secretion is decreased blood flow to the kidneys. However, if the adrenal glands are unable to respond to stimulation by corticotropin, decreased serum cortisol concentrations will persist. Starting as tiny buds in the oral cavity, these glands eventually form two lobes that sit just in front of the ears on either side, stretching from the cheekbone down to the jawline. Classification of glands according to mode of secretion.
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