| slovo | definícia |
vesicle
(encz) | vesicle,malý puchýř Zdeněk Brož |
vesicle
(encz) | vesicle,měchýřek n: Zdeněk Brož |
vesicle
(encz) | vesicle,puchýřek n: Zdeněk Brož |
Vesicle
(gcide) | Vesicle \Ves"i*cle\, n. [L. vesicula, dim. of vesica a bladder,
blister; akin to Skr. vasti bladder: cf. F. v['e]sicule.]
A bladderlike vessel; a membranous cavity; a cyst; a cell.
Specifically:
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(a) (Bot.) A small bladderlike body in the substance of a
vegetable, or upon the surface of a leaf.
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(b) (Med.) A small, and more or less circular, elevation of
the cuticle, containing a clear watery fluid.
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(c) (Anat.) A cavity or sac, especially one filled with
fluid; as, the umbilical vesicle.
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(d) (Zool.) A small convex hollow prominence on the surface
of a shell or a coral.
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(e) (Geol.) A small cavity, nearly spherical in form, and
usually of the size of a pea or smaller, such as are
common in some volcanic rocks. They are produced by the
liberation of watery vapor in the molten mass.
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vesicle
(wn) | vesicle
n 1: a small anatomically normal sac or bladderlike structure
(especially one containing fluid) [syn: vesicle, cyst] |
| | podobné slovo | definícia |
papulovesicle
(encz) | papulovesicle, n: |
seminal vesicle
(encz) | seminal vesicle, n: |
umbilical vesicle
(encz) | umbilical vesicle, n: |
vesicle
(encz) | vesicle,malý puchýř Zdeněk Brožvesicle,měchýřek n: Zdeněk Brožvesicle,puchýřek n: Zdeněk Brož |
Ear vesicle
(gcide) | Ear \Ear\ ([=e]r), n. [AS. e['a]re; akin to OFries. ['a]re,
['a]r, OS. [=o]ra, D. oor, OHG. [=o]ra, G. ohr, Icel. eyra,
Sw. ["o]ra, Dan. ["o]re, Goth. auso, L. auris, Lith. ausis,
Russ. ukho, Gr. o'y^s; cf. L. audire to hear, Gr. 'ai`ein,
Skr. av to favor, protect. Cf. Auricle, Orillon.]
1. The organ of hearing; the external ear.
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Note: In man and the higher vertebrates, the organ of hearing
is very complicated, and is divisible into three parts:
the external ear, which includes the pinna or auricle
and meatus or external opening; the middle ear, drum,
or tympanum; and the internal ear, or labyrinth. The
middle ear is a cavity connected by the Eustachian tube
with the pharynx, separated from the opening of the
external ear by the tympanic membrane, and containing a
chain of three small bones, or ossicles, named malleus,
incus, and stapes, which connect this membrane with the
internal ear. The essential part of the internal ear
where the fibers of the auditory nerve terminate, is
the membranous labyrinth, a complicated system of sacs
and tubes filled with a fluid (the endolymph), and
lodged in a cavity, called the bony labyrinth, in the
periotic bone. The membranous labyrinth does not
completely fill the bony labyrinth, but is partially
suspended in it in a fluid (the perilymph). The bony
labyrinth consists of a central cavity, the vestibule,
into which three semicircular canals and the canal of
the cochlea (spirally coiled in mammals) open. The
vestibular portion of the membranous labyrinth consists
of two sacs, the utriculus and sacculus, connected by a
narrow tube, into the former of which three membranous
semicircular canals open, while the latter is connected
with a membranous tube in the cochlea containing the
organ of Corti. By the help of the external ear the
sonorous vibrations of the air are concentrated upon
the tympanic membrane and set it vibrating, the chain
of bones in the middle ear transmits these vibrations
to the internal ear, where they cause certain delicate
structures in the organ of Corti, and other parts of
the membranous labyrinth, to stimulate the fibers of
the auditory nerve to transmit sonorous impulses to the
brain.
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2. The sense of hearing; the perception of sounds; the power
of discriminating between different tones; as, a nice ear
for music; -- in the singular only.
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Songs . . . not all ungrateful to thine ear.
--Tennyson.
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3. That which resembles in shape or position the ear of an
animal; any prominence or projection on an object, --
usually one for support or attachment; a lug; a handle;
as, the ears of a tub, a skillet, or dish. The ears of a
boat are outside kneepieces near the bow. See Illust. of
Bell.
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4. (Arch.)
(a) Same as Acroterium.
(b) Same as Crossette.
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5. Privilege of being kindly heard; favor; attention.
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Dionysius . . . would give no ear to his suit.
--Bacon.
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Friends, Romans, countrymen, lend me your ears.
--Shak.
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About the ears, in close proximity to; near at hand.
By the ears, in close contest; as, to set by the ears; to
fall together by the ears; to be by the ears.
Button ear (in dogs), an ear which falls forward and
completely hides the inside.
Ear finger, the little finger.
Ear of Dionysius, a kind of ear trumpet with a flexible
tube; -- named from the Sicilian tyrant, who constructed a
device to overhear the prisoners in his dungeons.
Ear sand (Anat.), otoliths. See Otolith.
Ear snail (Zo["o]l.), any snail of the genus Auricula and
allied genera.
Ear stones (Anat.), otoliths. See Otolith.
Ear trumpet, an instrument to aid in hearing. It consists
of a tube broad at the outer end, and narrowing to a
slender extremity which enters the ear, thus collecting
and intensifying sounds so as to assist the hearing of a
partially deaf person.
Ear vesicle (Zo["o]l.), a simple auditory organ, occurring
in many worms, mollusks, etc. It consists of a small sac
containing a fluid and one or more solid concretions or
otocysts.
Rose ear (in dogs), an ear which folds backward and shows
part of the inside.
To give ear to, to listen to; to heed, as advice or one
advising. "Give ear unto my song." --Goldsmith.
To have one's ear, to be listened to with favor.
Up to the ears, deeply submerged; almost overwhelmed; as,
to be in trouble up to one's ears. [Colloq.]
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Embryonic vesicle
(gcide) | Embryonic \Em`bry*on"ic\, a. (Biol.)
Of or pertaining to an embryo; embryonal; rudimentary.
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Embryonic sac or Embryonic vesicle (Bot.), the vesicle
within which the embryo is developed in the ovule; --
sometimes called also amnios sac, and embryonal sac.
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Germinal vesicle
(gcide) | Germinal \Ger"mi*nal\, a. [See Germ.]
1. Pertaining or belonging to a germ; as, the germinal
vesicle.
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2. (Biol.) Of or pertaining to the germ, or germ cells, as
distinguished from the somatic cells.
[Webster 1913 Suppl.]
Germinal layers (Biol.), the two layers of cells, the
ectoblast and entoblast, which form respectively the outer
covering and inner wall of the gastrula. A third layer of
cells, the mesoblast, which is formed later and lies
between these two, is sometimes included.
Germinal membrane. (Biol.) Same as Blastoderm.
Germinal spot (Biol.), the nucleolus of the ovum.
Germinal vesicle, (Biol.), the nucleus of the ovum of
animals.
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Germinative vesicle
(gcide) | Germinative \Ger"mi*na*tive\, a. [Cf. F. germinatif.]
Pertaining to germination; having power to bud or develop.
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Germinative spot, Germinative vesicle. (Biol.) Same as
Germinal spot, Germinal vesicle, under Germinal.
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Umbilical vesicle
(gcide) | Umbilical \Um*bil"ic*al\, a. [Cf. F. ombilical. See Umbilic,
n.]
1. (Anat.) Of or pertaining to an umbilicus, or umbilical
cord; umbilic.
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2. Pertaining to the center; central. [R.] --DeFoe.
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Umbilical cord.
(a) (Anat.) The cord which connects the fetus with the
placenta, and contains the arteries and the vein
through which blood circulates between the fetus and
the placenta; the navel-string.
(b) (Bot.) The little stem by which the seeds are attached
to the placenta; -- called also funicular cord.
Umbilical hernia (Med.), hernia of the bowels at the
umbilicus.
Umbilical point (Geom.), an umbilicus. See Umbilicus, 5.
Umbilical region (Anat.), the middle region of the abdomen,
bounded above by the epigastric region, below by the
hypogastric region, and on the sides by the lumbar
regions.
Umbilical vesicle (Anat.), a saccular appendage of the
developing embryo, containing the nutritive and
unsegmented part of the ovum; the yolk sac. See Illust. in
Appendix.
[1913 Webster] Umbilicate |
papulovesicle
(wn) | papulovesicle
n 1: a papule that changes into a blister [syn: papulovesicle,
vesicopapule] |
seminal vesicle
(wn) | seminal vesicle
n 1: either of a pair of glands located on either side of the
male urinary bladder that open into the vas deferens and
that secrete many components of semen during ejaculation |
umbilical vesicle
(wn) | umbilical vesicle
n 1: membranous structure that functions as the circulatory
system in mammalian embryos until the heart becomes
functional [syn: yolk sac, vitelline sac, {umbilical
vesicle}, vesicula umbilicus] |
vesicle
(wn) | vesicle
n 1: a small anatomically normal sac or bladderlike structure
(especially one containing fluid) [syn: vesicle, cyst] |
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