fertilization membrane


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fer·til·i·za·tion mem·brane

a viscous membrane formed on the inner surface of the vitelline membrane from the cytoplasm of the egg cell after entry of the sperm, preventing the entry of additional sperm.

fertilization membrane

a viscous membrane surrounding a fertilized ovum that prevents penetration of additional spermatozoa. It is formed by granules that are released by the fertilized ovum and adhere to the vitelline membrane.

fertilization membrane

a membrane that appears at the surface of the egg after FERTILIZATION. It is effectively a thickened VITELLINE MEMBRANE that may separate from the surface of the egg; it prevents the entry of additional sperms.