membrana mem·bra·na (měm-brā'nə)
n. pl. mem·bra·nae (-nē)
A membrane, especially a biomembrane.
Near the ciliary end of the vitreous humour they anastomose with the vessels of the membrana capsulo-pupillaris.
That she had a membrana on her, which made her uncapable of man, though for her delight she tried many.
On its external (posterior) surface a distinct cuticular membrane, the membrana limitans externa, early appears.
The sheath becomes very much thickened; and on the membrana elastica covering it the vertebral arches directly rest.
It is ciliated except where it covers the membrana tympani, ossicles and promontory; here it is stratified.
Externally is placed the membrana elastica externa (mel), while within is the cuticular sheath of the notochord.
Around it is a flat follicular epithelium enclosed in a membrana propria folliculi.
It has besides a whitish membrane of greater thickness (membrana nictitans), which closes the eye as in other birds.
membrana branchialis radiis sex sustentata, interoperculis liberis, accumbentibus tecta.
The proportion that the membrana or apical area bears to the rest of the wing varies in the different tribes.