fenestra

fenestra /fe·nes·tra/ (fĕ-nes´trah) pl. fenes´trae   [L.] a window-like opening.

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fenestra coch´leae  round window; an opening in the inner wall of the middle ear covered by the secondary tympanic membrane.

fenestra ova´lis  f. vestibuli.

fenestra rotun´da  f. cochleae.

fenestra vesti´buli  oval window; an opening in the inner wall of the middle ear, closed by the base of the stapes.

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fe·nes·tra (f-nstr)

n. pl. fe·nes·trae (-tr)

1. A small anatomical opening, often closed by a membrane.

2. The opening in a bone made by surgical fenestration.

3. A specialized opening, as in a surgical instrument.

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fe·nestral adj.

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fenestra

[fines′trə] pl. fenestrae

Etymology: L, window

1 an aperture, as in a bandage or cast, that is cut out to relieve pressure or to administer regular skin care.

2 a microscopic opening in certain capillaries specialized in filtration, as in the glomerular capillaries of the kidney often covered by membrane.

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fenestra

pl. fenestrae [L.] a window-like opening.

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fenestra cochleae

a round opening in the inner wall of the middle ear covered by the secondary tympanic membrane; called also round window.

sternal fenestra

large openings in the caudal edge of the sternum of birds.

fenestra vestibuli

an oval opening in the inner wall of the middle ear, which is closed by the stapes; called also oval window.