Displaying articles by tag: Gastrulation in Chick

BS Media in Zoology
Sunday, 11 June 2017 15:55

GASTRULATION IN CHICK-III - FORMATION OF PRIMITIVE STREAK & MESODERM

The second step in gastrulation is the formation of primitive streak. At the posterior region of area pellucida in the mid dorsal line primitive streak will appear as a thickened area. It starts eight hours after incubation. The thickening is because convergence of cells of blastoderm towards the centre. Usually in…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Gastrulation in Chick
  • Formation of Primitive Streak
  • Formation of Mesoderm in Chick Embryo
  • Embryology
  • Chick Embryology
  • Development of Chick
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BS Media in Zoology
Sunday, 11 June 2017 15:29

GASTRULATION IN CHICK-II - FORMATION OF ENDODERM

Formation of endoderm: Endoderm of hypoblast develops as a single layer of cells in side of blastocoel. After the formation of endoderm, upper layer is called epiblast. There are different theories to explain the formation of endoderm. Infiltration theory: This was proposed by Peter in 1923. According to this theory…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Gastrulation in Chick
  • Formation of Endoderm in Chick
  • Development of Chick
  • Embryology
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BS Media in Zoology
Sunday, 11 June 2017 15:03

CHICK EMBRYO AT 96 HOURS - GASTRULATION IN CHICK-I

In the upper region of oviduct fertilization will takes place. One sperm will penetrate into hens egg and fertilizes with the egg. The fertilized egg will travel through oviduct. It takes nearly 22 hours. Hence the early development of egg will take place in oviduct. Cleavage: Cleavage is restricted to…

  • Zoology
  • Zoology Notes
  • Notes
  • Article
  • Embryology
  • CHICK EMBRYO AT 96 HOURS
  • Gastrulation in Chick
  • Development of Chick
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