Involuntary - Iron

involuntary

(in″vol′ŭn-ter″ē) [²in- + voluntary] 1. Independent of or contrary to volition. 2. Occurring as a result of a reflex. involuntarily (in″vol-ŭn-ter′ĭ-lē), adv.

involution

(in″vŏ-loo′shŏn) [L. involvere, to roll up, wrap] 1. A turning or rolling inward. 2. The reduction in size of the uterus after childbirth. 3. The retrogressive change in vital processes after their functions have been fulfilled, such as the change that follows the menopause. 4. A backward change. 5. The diminishing of an organ in vital power or in size. 6. In bacteriology, digression from the usual morphological type such as occurs in certain bacteria, esp. when grown under unfavorable conditions; degeneration.

 uterine i., i. of uterus The return of the uterus to normal size after childbirth.

involutional

(in-vŏ-loo′shŏn-ăl) Pert. to involution.

inward leakage

The relative concentration of a substance (such as a toxic gas) on either side of a filter. The more the inward leakage of the toxin is limited, the better the filter.

IO

Interosseous; intraoperative.

lodamoeba

(ī″ō-dă-mē′bă) A genus of amebae that colonizes the colons of humans and animals such as monkeys and pigs. They are not considered pathogenic.

 I. bütschlii The species that may be found in humans. Their cysts may be mistaken for those of pathogenic amebae but have only one nucleus.

iodide

(ī′ō-dīd) A compound of iodine containing another radical or element, as potassium iodide.

 cesium i. A phosphor used in radiographical image intensifiers that emits light when struck by radiation.

iodinate

(ī′ŏ-dĭ-nāt″) 1. To combine with iodine. 2. To add iodine to a chemical, as in the production of thyroid hormones by thyrocytes.

iodine

(ī′ŏ-dīn″, -dēn″) [Gr. ioeidēs, violet-colored + -ine] SYMB: I. A non-metallic chemical element of the halogen group, atomic weight (mass) 126.904, atomic number 53, specific gravity (solid, 20°C) 4.93. It is a black crystalline substance with a melting point of 113.5°C; it boils at 184.4°C, giving off a characteristic violet vapor. Sources of iodine include vegetables, esp. those growing near the seacoast; iodized salt; and seafoods, esp. liver of halibut and cod, or fish liver oils.

 FUNCTION: Iodine is part of the hormones triiodothyronine (T₃) and thyroxine (T₄), and prevents goiter by enabling the thyroid gland to function normally. The amount of iodine in the entire body averages 50 mg, of which 10 to 15 mg is found in the thyroid. The adult daily requirement for iodine is from 100 to 150 µg. Growing children, adolescents, pregnant women, ...