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A thin layer or fold of tissue, usually supported by a fibrous network, serving to cover or line some part or organ, and often secreting or absorbing certain fluids.

See Membranous.

The thin membrane which separates the canal of the cochlea from the vestibular scala in the internal ear.

The placenta and membranes with which the fetus is connected, and which come away after delivery.

An animal whose toes are connected by a membrane, serving for a wing, as the bat.

A thin membrane surrounding the embryos of mammals, birds, and reptiles.

Without definite structure; as, an anhistous membrane.

Inflammation of the arachnoid membrane.

Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.

Pertaining to the arachnoid membrane; arachnoid.

Cobweblike; extremely thin and delicate, like a cobweb; as, the araneous membrane of the eye. See Arachnoid. Derham.

ry canal (Anat.), the tube from the auditory meatus or opening of the ear to the tympanic membrane.

Paps, or little projections, of the mucous membrane, which mark the opening of the submaxillary glands under the tongue in horses and cattle. The name is mostly applied when the barbs are inflamed and swollen. [Written also barbel and barble.]

cture. ( See Base, n., 3 (a).) Hence: The rooms of a ground floor, collectively. Basement membrane (Anat.), a delicate membrane composed of a single layer of flat cells, forming the substratum upon which, in many organs, the epithelioid cells are disposed.

One of the Cheiroptera, an order of flying mammals, in which the wings are formed by a membrane stretched between the elongated fingers, legs, and tail. The common bats are small and insectivorous. See Cheiroptera and Vampire. Bat tick (Zoöl.), a wingless, dipterous insect of the genus Nycteribia, parasitic on bats.…

The germinal membrane in an ovum, from which the embryo is developed.

Pertaining to the membrane covering the gills of fishes. -- n. (Anat.)

The branchiostegal membrane. See Illustration in Appendix.

hial glands, glands whose functions are unknown, seated along the bronchia. -- Bronchial membrane, the mucous membrane lining the bronchia. -- Bronchial tube, the bronchi, or the bronchia.

cavity; especially, one of the synovial sacs, or small spaces, often lined with synovial membrane, interposed between tendons and bony prominences.