Polydipsia Excessive thirst is called polydipsia Polyuria causes an excessive

Polydipsia excessive thirst is called polydipsia

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Polydipsia . Excessive thirst is called polydipsia. Polyuria causes an excessive loss of body water, thereby stimulating the thirst mechanism in an attempt to replace the water
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Glucagon Glucagon, a second pancreatic hormone, is secreted by the alpha cells of the islets of Langerhans. Its primary action is to increase blood glucose levels. Glucagon raises the blood. glucose level in two ways: by stimulating the conversion of glycogen to glucose in the liver and by stimulating the conversion of proteins into glucose (gluconeogenesis). Gonads - The gonads are the sex glands and refer to the ovaries in the female and to the testes in the male. The gonads not only produce ova (eggs) and sperm but also secrete hormones. The gonads are therefore glands. The ovaries secrete two female sex hormones: estrogen and progesterone. Thymus Gland - The thymus gland lies in the thoracic cavity behind the sternum. The thymus gland secretes hormones called thymosins, which play a role in the immune system. Pineal Gland - The pineal gland is a cone-shaped gland located close to the thalamus in the brain. It has been called the body’s “biological clock,” controlling many of its biorhythms. The pineal gland secretes a hormone called melatonin, which affects the reproductive cycle by influencing the secretion of hypothalamicreleasing hormones. In general, melatonin plays an important role in sexual maturation. Melatonin is also thought to play a role in the sleep–wake cycle. Melatonin secretion is lowest during daylight hours and highest at night. As melatonin levels increase, the person becomes sleepy. Elevated melatonin levels have also been implicated in a type of depression called seasonal affective disorder (SAD). Organ-Specific Hormones These hormones usually control the activities of a particular organ. For example, hormone-secreting cells in the digestive tract secrete cholecystokinin and gastrin, which help regulate digestion. The kidneys secrete erythropoietin, which helps regulate red blood cell production. The liver secretes a number of hormones, including insulin-like growth factor
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The prostaglandins are hormones derived from a fatty acid called arachidonic acid. The prostaglandins are produced by many tissues and generally act locally, near their site of secretion. The prostaglandins play an important role in the regulation of smooth muscle contraction and the inflammatory response. Prostaglandins are also thought to increase the sensitivity of nerve endings to pain. Excess adipose tissue acts as a gland—a very nasty gland—that secretes hormones called cytokines.
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