Germ layers derivatives

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???? (Introduction)

• ??????????????? ?
• ???????????????????????????
• Germ layers derivatives
• ????????????????? chick embryo
• ???????????? embryo
• Chronological age
• Morphological age
• Hamburger Hammiltom stage
• Carnegie stage

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Transportation Development of Conceptus
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Preimplantation Development
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Zygote
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Morula
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Blastocyst (or Blastula) Bilaminar Embryonic
Disc
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Blastocyst (or Blastula) Bilaminar Embryonic
Disc
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Trilaminar Embryonic Disc
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Trilaminar Embryonic Disc
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Extra-embryonic Membranes

• Amnion
• Chorion / Serosa
• Allantois
• Yolk sac
• Placenta

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Chick Extraembryonic Membranes
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Chick Extraembryonic Membranes
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Chick Extraembryonic Membranes
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Chick Extraembryonic Membranes

• Amnion / amniotic sac somatoplure
• ?? amniotic fluid ????????? (aquarium of embryo)
• Embryo ?????????? ?????????????????????
• ???????????? ?????????????? ????????????????

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Chick Extraembryonic Membranes

• Chorion somatoplure
• ???????????? allantois chorio-allantois /
  chorio-allantoic membrane
• ????????????? respiration organ

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Chick Extraembryonic Membranes

• Allantois splanchnopleure
• ?????? chorion respiratory organ
• ?????????????? nitrogenous waste

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Chick Extraembryonic Membranes

• Yolk sac splanchnopleure
• ????????????????? embryo ???????
• Dorsal part ????????? primitive gut

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Mammalian Extraembryonic Membranes Pig
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Mammalian Extraembryonic Membranes Pig
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Opossum Extraembryonic Membranes
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Mammalian Blastocyst Implantation Placenta

• 1. Polar trophoblast differentiation
• Cytotrophoblast
• Syntrophoblast / Syncytiotrophoblast
• 2. Decidual reaction
• Stromal cells gt decidual cells (glycogen fat)
• Endometrial capillaries gt sinusoids
• Uterine glands proliferation

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Mammalian Extraembryonic Membranes
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Mammalian Extraembryonic Membranes
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Mammalian Extraembryonic Membranes
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Fetal Placenta Chorionic Villi
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Fetal Placenta Chorionic Villi
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Fetal Placenta Chorionic Villi
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Fetal Placenta Chorionic Villi
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Placental Circulation
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Placental Circulation
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Placental Circulation
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Pregnant Endometrium

• 1. Decidual basalis ??????? conceptus
• ???? maternal placenta ?? villous chorion (????
  chorion fundosum) ????
• 2. Decidual capsularis ?????? conceptus
• chorionic villi ??????????? smooth chorion (????
  chorion laeve)
• 3. Decidual parietalis ???????????? conceptus

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Pregnant Endometrium
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Types of Placentae Based on Morphology
(pig)
(dog cat)
(cow)
(rat human)
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Placental Membrane
1. Maternal endothelium 2. Endometrial
connective tissue 3. Endometrial epithelium 4.
Chorionic epithelium 5. Chorionic connective
tissue 6. Chorionic endothelium
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Types of Placentae Based on Histology
(?? ???)
(????)
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Types of Placentae Based on Histology
(?????)
(??????????? -??)
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Mammalian Extraembryonic Membranes
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Mammalian Extraembryonic Membranes
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Mammalian Extraembryonic Membranes
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Chick Extraembryonic Membranes

• Yolk sac splanchnopleure
• ????????????????? embryo ???????
• Dorsal part ????????? primitive gut

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Ectopic Pregnancy
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Tubal Ectopig Pregnancy
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Tubal Ectopig Pregnancy
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Experimental Embryology
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DNA Injection
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Nuclear Transfer
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Microinjection
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In vivo Fertilization (IVF.)