General embryology

Early events

    Polar body

    Oogenesis

    Oogonium
    Oocyte

        Primary oocyte
        Secondary oocyte
    Ovulation
    Ovum 

    Spermatogenesis

    Spermatogonium
    Primary spermatocyte
    Secondary
   
spermatocyte

    Sperm transport

    Death of gamete

    Failure of deutoplasm

    Mitosis
    Meiosis
    Failure of resumption of
   
meiosis

    Polyspermy

Fertilization

 

Embryogenesis

Early embryogenesis

    Morula

    Blastocele

    Blastocyst

    Blastomeres

    Inner cell mass

    Outer cell mass

Trophoblast

    Cytotrophoblast

    Syncytiotrophoblast

Implantation

Fetal membranes
   Amnion
  
Chorion

Early anomalies

 

Embryo   

Bilaminar embryo

    Ectoderm

    Endoderm

 

Late embryogenesis

Amniotic cavity

    Germ disc

    Germ layers

    Medullary plate

    Embryonic disc

Gastrulation

    Primitive streak

    Primitive node

    Trilaminar embryo

    Paraxial mesoderm

Mesoderm
    Lateral plate mesoderm

    Intermediate cell mass

    Somatopleuric
   
mesoderm

    Splanchnopleuric
   
mesoderm

    Suprarenal gland

Somites

    Sclerotome

    Myotome

    Dermatome

Embryo

    Embryo folding

    Embryo growth

    Embryo growth factors

Celom

    Intraembryonic celom

    Extra embryonic celom

Notochord

Primary yolk sac

Secondary yolk sac

Allantois

Umbilical cord
     False knot

Septum transversum

Late anomalies

Congenital anomalies and genetic diseases

Congenital anomalies

Genetic conditions

Placenta

  Normal placenta

  Placental circumvallata

  Placenta bipartita

  Placenta succenturiata

  Placenta previa

  Placenta hemangioma

  Placenta fenestra

  Placenta duplex

  Battledore placenta

Fetus

 

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The Human Anatomy Laboratory
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