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  • Glial cell membrane

    An extremely delicate membrane, formed of foot plates of astrocytes, that surrounds all the blood vessels in the brain, spinal cord, and the lining of the pia mater, separating these vessels from the nervous tissue proper. This membrane is thought to be one of the components of the blood-brain barrier.  

  • Glassy membrane

    The transparent capsule that separates membrana granulosa from the theca of the graafian follicle.  

  • Fibrous membrane

    A membrane composed entirely of fibrous connective tissue. Examples include the fasciae, aponeuroses, perichondrium, periosteum, dura mater, and the capsules of some organs.  

  • Fenestrated membrane

    A layer of elastic connective tissue possessing minute round or oval openings. Found in the tunica intima and tunica media of medium-sized and large arteries.  

  • False membrane

    Fibrinous exudate on a mucous surface of a membrane, as in croup or diphtheria.  

  • External limiting membrane

    The outer layer of cells of the embryonic neural tube.  

  • Epiretinal membrane

    An excessive proliferation of retinal pigment epithelial cells and extracellular proteins on the retinal surface. This condition, which can distort vision, is typically found in people older than 50. Marked visual blurring caused by epiretinal membranes occurs in macular pucker.  

  • Elastic membrane

    One of several membranes formed of elastic connective tissue fibers.  

  • Egg membrane

    One of the protective membranes or envelopes enclosing an ovum. It may be primary (formed by egg itself, as in vitelline membrane), secondary (formed by follicle cells, as in zona pellucida), or tertiary (formed by oviduct or uterus, as in albumin and shell of hen’s egg).  

  • Diphtheritic membrane

    The fibrinous false membrane on the mucous surfaces in diphtheria.  

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