What does pellucida mean?
Translation and Meaning of pellucida in Almaany English-English Dictionary. zona pellucida. [ n ] thick membrane around the mammalian ovum ; can be penetrated by one sperm in the fertilization process ; usually remains around the fertilized egg until it is implanted in the wall of the uterus.
What is the meaning of Zona?
Any zone or encircling area. 3. Any area with a specific boundary. Zona, Latin for a girdle, is a synonym for shingles because it can appear to girdle part of the body.
What is zona pellucida definition?
The zona pellucida is a thick extracellular coat that surrounds all mammalian eggs and preimplantation embryos. Mutant females that produce eggs that lack a zona pellucida are infertile. The functions of the zona pellucida during fertilization now can be ascribed to certain of its glycoproteins.
How do you pronounce pellucida?
noun, plural zo·nae pel·lu·ci·dae [zoh-nee puh-loo-si-dee, pel-yoo-]. Anatomy.
What does acrosome mean?
: an anterior prolongation of a spermatozoon that releases egg-penetrating enzymes.
What is hatching in embryology?
Through a series of expansion-contraction cycles the embryo bursts the covering. This is supported by enzymes that dissolve the pellucid zone at the abembryonic pole. The rhythmic expansions and contractions result in the embryo bulging out of and emerging from the rigid envelope. This “first birth” is called hatching.
Is Zona safe to use?
In the end, as a reviewed app, Zona is even slicker than the Netflix-looking Popcorn Time, offering more types of media and overall so many more choices…but it’s still a piracy app and therefore downloading copyright-protected content is illegal.
What does the name Zona mean in Hebrew?
1. “Zona” means “prostitute” in Hebrew.
What occurs during capacitation?
Capacitation has two effects: destabilisation of the acrosomal sperm head membrane which allows it to penetrate the outer layer of the egg, and chemical changes in the tail that allow a greater mobility in the sperm. FPP comes into contact with the spermatozoa during ejaculation, as the sperm and seminal fluid mix.
What happens to the zona pellucida?
In humans, five days after the fertilization, the blastocyst performs zona hatching; the zona pellucida degenerates and decomposes, to be replaced by the underlying layer of trophoblastic cells. The zona pellucida is essential for oocyte growth and fertilization.
How do you pronounce radiata?
Phonetic spelling of radiata
What is the meaning of the word zona pellucida?
zona pellucida. noun, plural zo·nae pel·lu·ci·dae [zoh-nee puh-loo-si-dee, pel-yoo-] /ˈzoʊ ni pəˈlu sɪˌdi, pɛlˈyu-/. Anatomy. the transparent, noncellular layer surrounding the ovum of mammals, often having radial striations.
What is the meaning of the word pellucid?
adjective allowing the maximum passage of light, as glass; translucent. clear or limpid: pellucid waters. clear in meaning, expression, or style: a pellucid way of writing.
Where is the zona pellucida located in the ovary?
(Latin, zona pellucida= transparent zone) The zona pellucida(ZP) is a specialized extracellular matrix surrounding the developing oocyte (egg, ovum) within each follicle within the ovary.
What makes up the Cumulus of the zona pellucida?
The zona pellucida is surrounded by the cumulus oophorus. The cumulus is composed of cells that care for the egg when it is emitted from the ovary. This structure binds spermatozoa, and is required to initiate the acrosome reaction.