| involuntary muscles | Muscle's not ordinarily under control of the will; except in the case of the heart, they are smooth (nonstriated) muscle's, innervated by the autonomic nervous system. (05 Mar 2000) |
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| involuntary nervous system | <anatomy> Neurons that are not under conscious control, comprising two antagonistic components, the sympathetic and parasympathetic nervous systems. The autonomic nervous system regulates key functions including the activity of the cardiac (heart) muscle, smooth muscles (e.g., of the gut), and glands. The autonomic nervous system has two divisions: 1. The sympathetic nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. 2. The parasympathetic nervous system slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles. (03 Jul 1999) |
| involute | <botany> Rolled inwards, of a leaf, with the margins rolled towards the adaxial surface. (28 Oct 1998) |
| involuted | 1. <botany> Rolled inward from the edges; said of leaves in vernation, or of the petals of flowers in aestivation. 2. <zoology> Turned inward at the margin, as the exterior lip of the Cyprea. Rolled inward spirally. Origin: L. Involutus, p. P. Of involvere. See Involve. Source: Websters Dictionary (01 Mar 1998) |
| involution | 1. A rolling or turning inward. 2. One of the movements involved in the gastrulation of many animals. 3. A retrograde change of the entire body or in a particular organ, as the retrograde changes in the female genital organs that result in normal size after delivery. 4. The progressive degeneration occurring naturally with advancing age, resulting in shrivelling of organs or tissues. Origin: L. Involutio, volvere = to roll (18 Nov 1997) |
| involution cyst | A mammary cyst occurring at the menopause, due to fibrocystic disease. (05 Mar 2000) |
| involution form | An irregular or atypical bacterial cell produced as a result of exposure to unfavorable conditions. (05 Mar 2000) |
| involution of the uterus | The process of reduction of the uterus to its normal nonpregnant size and state following childbirth. (05 Mar 2000) |
| involutional | Relating to involution. (05 Mar 2000) |
| involutional depression | Depression or psychosis first occurring in the involutional years (40 to 55 for women, 50 to 65 for men). (05 Mar 2000) |
| involutional melancholia | A depressive disorder of middle life, commonly associated with the climacteric. (05 Mar 2000) |
| involutional psychosis | An obsolete term for mental disturbance occurring during the menopause or later life. (05 Mar 2000) |
| involve | 1. To roll or fold up; to wind round; to entwine. "Some of serpent kind . . . Involved Their snaky folds." (Milton) 2. To envelop completely; to surround; to cover; to hide; to involve in darkness or obscurity. "And leave a singed bottom all involved With stench and smoke." (Milton) 3. To complicate or make intricate, as in grammatical structure. "Involved discourses." 4. To connect with something as a natural or logical consequence or effect; to include necessarily; to imply. "He knows His end with mine involved." (Milton) "The contrary necessarily involves a contradiction." (Tillotson) 5. To take in; to gather in; to mingle confusedly; to blend or merge. "The gathering number, as it moves along, Involves a vast involuntary throng." (Pope) "Earth with hell To mingle and involve." (Milton) 6. To envelop, infold, entangle, or embarrass; as, to involve a person in debt or misery. 7. To engage thoroughly; to occupy, employ, or absorb. "Involved in a deep study." 8. <mathematics> To raise to any assigned power; to multiply, as a quantity, into itself a given number of times; as, a quantity involved to the third or fourth power. Imply is opposed to express, or set forth; thus, an implied engagement is one fairly to be understood from the words used or the circumstances of the case, though not set forth in form. Involve goes beyond the mere interpretation of things into their necessary relations; and hence, if one thing involves another, it so contains it that the two must go together by an indissoluble connection. War, for example, involves wide spread misery and death; the premises of a syllogism involve the conclusion. Synonym: To imply, include, implicate, complicate, entangle, embarrass, overwhelm. Origin: L. Involvere, involutum, to roll about, wrap up; pref. In- in + volvere to roll: cf. OF. Involver. See Voluble, and cf. Involute. (28 Oct 1998) |
| involved | <zoology> Same as Involute. Source: Websters Dictionary (01 Mar 1998) |
| involucre |
the indusium of members of the Hymenophyllaceae.
Ãâó: www.anbg.gov.au/glossary/webpubl/fernglos.htm
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| invertebrate |
[in-VUR-teh-brate] any of the types of animals that lack a backbone (spine), including molluscs, arthropods, worms, etc.
Ãâó: members.aol.com/YESedu/glossary.html
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| inversion |
1) Turning inward, for example, of the sole of the foot 2) A chromosomal mutation that results when a segment of a chromosome is excised and then reintegrated in an orientation 180?from the original orientation.
Ãâó: www.modernhumanorigins.com/i.html
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| invasion |
In plant pathology: Spread of a pathogen through tissues of a diseased plant. (20)
Ãâó: ppathw3.cals.cornell.edu/glossary/Defs_I.htm
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| involute |
Of the margin of the pileus: Rolled in, especially when young. (17)
Ãâó: ppathw3.cals.cornell.edu/glossary/Defs_I.htm
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| INV | turn inside out or upside down |
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| INV | make an inversion (in a musical composition) |
| INV | a class of synthetic detergents in which the surface-active part of the molecule is the cation |
| INV | a mixture of equal parts of glucose and fructose resulting from the hydrolysis of sucrose |
| INV | an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose |
| INV | any animal lacking a backbone or notochord |
| INV | (zoology) lacking a backbone or spinal column |
| INV | any of various organs of locomotion or attachment in invertebrates |
| INV | (of a plant ovule) completely inverted |
| INV | being in such a position that top and bottom are reversed |
| INV | a punctuation mark used to attribute the enclosed text to someone else |
| INV | a box pleat reversed so that the fullness is turned inward |
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