Cell Component
zona pellucida
zo·na pel·lu·ci·da
Subclass of:
Extracellular Matrix;
Ovum
Definitions related to zona pellucida:
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A thick layer of glycoprotein that surrounds the plasma membrane of the oocytes of mammals, and functions to protect the oocyte during growth and transport, assist with fertilization and spermatozoa binding, preventing polyspermy, facilitate blastocyst development, and prevent ectopic pregnancy.NCI ThesaurusU.S. National Cancer Institute, 2021
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A tough transparent membrane surrounding the OVUM. It is penetrated by the sperm during FERTILIZATION.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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