proamnion

proamnion
An area of the extraembryonic membranes beneath, and in front of, the developing head of a young embryo that remains without mesoderm for some time.

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pro·am·ni·on -'am-nē-.än, -ən n, pl -ni·ons or -nia -nē-ə an area in the anterior part of the blastoderm of an early amniote embryo that is free of mesoderm
pro·am·ni·ot·ic -.am-nē-'ät-ik adj

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pro·am·ni·on (pro-amґne-on) that part of the embryonal area at the ventral and lateral sides of the head which remains without mesoderm for some time.

Medical dictionary. 2011.

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Look at other dictionaries:

  • proamnion — pro·amnion …   English syllables

  • proamnion — (ˈ)prō+ noun Etymology: pro (I) + amnion : an area in the anterior part of the blastoderm of an early amniote embryo that lacks mesoblast and gives rise to the head fold of the amnion …   Useful english dictionary

  • proamniotic — (|)prō+ adjective Etymology: proamnion + tic (as in amniotic) : of or relating to a proamnion …   Useful english dictionary

  • Splanchnopleure — Infobox Embryology Name = PAGENAME Latin = GraySubject = 6 GrayPage = 50 Caption = A series of transverse sections through an embryo of the dog. (After Bonnet.) Section I is the most anterior. In V the neural plate is spread out nearly flat. The… …   Wikipedia

  • Somatopleure — Infobox Embryology Name = PAGENAME Latin = GraySubject = 6 GrayPage = 50 Caption = A series of transverse sections through an embryo of the dog. (After Bonnet.) Section I is the most anterior. In V the neural plate is spread out nearly flat. The… …   Wikipedia

  • προάμνιο — το, Ν ανατ. το κεφαλικό επικάλυμμα τού βλαστοδέρματος κατά τον υποτυπώδη σχηματισμό τού εμβρύου. [ΕΤΥΜΟΛ. Αντιδάνεια λ., πρβλ. αγγλ. proamnion (< προ * + αμνός)] …   Dictionary of Greek

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