Category: P
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Postpartum thyroiditis
A transient disturbance in the balance of the thyroid gland that can occur in the first year after childbirth. There are usually no symptoms, but there may be symptoms of hyperthyroidism or of hypothyroidism. Treatment is usually not necessary.
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Preeclampsia
A condition of unknown cause occurring in about 3 percent of individuals during the last three months of pregnancy, accompanied by hypertension, fluid retention, and proteinuria (protein in the urine). A toxemia of late pregnancy characterized by hypertension and edema may progress to eclampsia. Toxic condition in pregnancy that precedes the full-blown phase. A condition…
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Parathyroid glands
Four small glands situated in the neck beside the thyroid gland. These glands secrete parathyroid hormone, which is mainly concerned with calcium and phosphorous metabolism. One of two glands located on each side in or near the thyroid gland that mainly controls calcium metabolism and muscle tone. Failure to function properly results in convulsions. One…
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Papilledema
Swelling of the optic nerve that can be seen in the back of the eye with an opthalmoscope; it may occur when the blood pressure is severely elevated. A swelling of the head of the optic nerve, usually due to increased intracranial pressure. Swelling of the optic disc, the beginning of the optic nerve, usually…
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Palpable
Felt by touching. Perceptible by touch. Able to be felt when touched. Able to be examined with the hand. Perceivable by touch.
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Proliferous buds
Adventitious buds on leaves, flowers, stems, peduncles or roots that are capable of rooting and forming independently living plants.
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Pinnulule
A leaflet of a multiply pinnate leaf.
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Phytotelma
A water body produced by terrestrial plants, often a pitcher (Cephalotaceae, Nepenthaceae, Sarraceniaceae), bamboo internodes or tree hollows, formed by leaves that hold water, as in some Bromeliaceae, Heliconiaceae, Musaceae and Dipsacus (Caprifoliaceae).
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Perfect flower
Flower that has both male and female parts.
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Parietal placentation
A form of placentation (seed positions) for an ovary in which the ovules are attached to the inner surface of the outer wall of a singlecelled syncarpous ovary.