cushion

cushion /cush·ion/ (koosh´un) a soft or padlike part.

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anal cushions  masses of subepithelial tissue, located in the left lateral, right posterior, and right anterior quadrants of the anal canal, that seal the anal canal and maintain continence.

endocardial cushions  elevations on the atrioventricular canal of the embryonic heart which later help form the interatrial septum.

intimal cushions  longitudinal thickenings of the intima of certain arteries, e.g., the penile arteries; they serve functionally as valves, controlling blood flow by occluding the lumen of the artery.

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cush·ion (kshn)

n.

A padlike body part.

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cushion

Etymology: OFr, coissin

any anatomic structure that resembles a pad or pillow.

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cushion [koosh´un]

a fleshy, padlike anatomical structure.

endocardial c's swellings that form on the dorsal and ventral walls of the atrioventricular canal of the embryonic heart during the fourth week of gestation. As they are invaded by mesenchymal cells during the fifth week, they approach each other and fuse, dividing the atrioventricular canal into right and left canals.

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cushion

a term describing exceptional thickness of the upper lips or flews seen in some short-nosed breeds of dogs, e.g. Boxer, British bulldog.