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Click Here For A Complete Listing Of All Chapters In The WikiDoc Living Textbook Of Embryology In Alphabetical Order

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Developmental biology > Human embryogenesis (development of embryo) and development of fetus (some dates are approximate - see Carnegie stages and a timeline)
Week 1Fertilization - Egg activation - Zygote - Cleavage - Morula - Blastula (Blastomere) - Blastocyst - Inner cell mass
Week 2Bilaminar disc (Hypoblast, Epiblast)
Week 3 (Trilaminar embryo,
germ layers)		Archenteron/Primitive streak (Primitive pit, Primitive knot/Blastopore, Primitive groove) - Gastrula/Gastrulation - Regional specification

Ectoderm: Surface ectoderm - Neuroectoderm - Somatopleure - Neurulation - Neural crest

Endoderm: Splanchnopleure

Mesoderm: Chorda- - Paraxial (Somite/Somitomere/Sclerotome/Myotome/Dermatome) -
Intermediate - Lateral plate (Intraembryonic coelom, Splanchnopleure/Somatopleure)
Extraembryonic/uterusTrophoblast (Cytotrophoblast, Syncytiotrophoblast)

Blastocoele - Yolk sack/exocoelomic cavity - Heuser's membrane - Extraembryonic coelom - Vitelline duct

Umbilical cord (Umbilical artery, Umbilical vein, Wharton's jelly) - Allantois

Placenta - Decidua (Decidual cells) - Chorionic villi/Intervillous space - Gestational sac (Amnion/Amniotic sac/Amniotic cavity, Chorion)
HistogenesisProgrammed cell death - Stem cells - Germ line development
OrganogenesisLimb development: Limb bud - Apical ectodermal ridge/AER
other structures: Eye development - Cutaneous structure development - Heart development - Development of the urinary and reproductive organs
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Prenatal development/Mammalian development of circulatory system
VascularBlood island

arteries: Dorsal aorta - Aortic arches - Vitelline arteries - Ductus arteriosus - Umbilical artery

veins: Cardinal veins - Ducts of Cuvier - Vitelline veins - Ductus venosus - Umbilical vein
Heart developmentPrimitive heart tube: Truncus arteriosus - Bulbus cordis - Primitive ventricle - Primitive atrium - Sinus venosus
Septum primum (Ostium primum, Ostium secundum) - Septum secundum (Foramen ovale) - other septa (Endocardial cushions/Septum intermedium, Aorticopulmonary septum) - Atrial canal
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Prenatal development/Mammalian development of digestive system
GutStomodeum

Foregut (Buccopharyngeal membrane, Rathke's pouch, Tracheoesophageal septum, Pancreatic bud, Hepatic diverticulum)

Midgut

Hindgut (Urorectal septum )

Proctodeum
MesenteryDorsal mesentery - Ventral mesentery
OtherSeptum transversum
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Human development of head and neck
Branchial regionPharyngeal arch (1st, 2nd) - Pharyngeal pouch - Pharyngeal groove - Cervical sinus

Frontonasal prominence - Maxillary prominence - Mandibular prominence (Meckel's cartilage)

tongue: Lateral lingual swelling - Tuberculum impar

nose: Nasal placode - Olfactory pit - nasal prominences (Lateral, Medial) - Intermaxillary segment

palate: Primitive palate - Secondary palate
Tooth developmentDental papilla - Odontoblast - Ameloblast - Hertwig's epithelial root sheath - Epithelial cell rests of Malassez - Cementoblast
ThyroidThyroid diverticulum - Thyroglossal duct - Ultimobranchial body
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Prenatal development/Mammalian development of nervous system
General neural development/
neurulation/neurula		Notochord - Neuroectoderm - Neural plate - Neural folds - Neural groove

Neural crest - Neural tube (Neuromere/Rhombomere, Cephalic flexure)

Alar plate (sensory) - Basal plate (motor)

Glioblast - Neuroblast
Eye developmentOptic vesicles - Optic stalk - Optic cup - Lens placode
Auditory developmentAuditory vesicle - Auditory pit
Note: mostly ecoderm, but mesoderm is precursor for epineurium, perineurium, and endoneurium
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Prenatal development/Mammalian development of respiratory system (overview)
UpperNasal placode
LowerLaryngotracheal groove - Lung buds
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Prenatal development/mammalian embryogenesis - Development of the urinary and reproductive organs
General Urinary/Reproductive systemCloacal membrane - Cloaca - Urethral groove - Urogenital sinus - Urachus - Urogenital folds
Kidney developmentNephrogenic cord - Nephrotome - Pronephros - Mesonephros (Mesonephric tubules)
Ureteric bud - Metanephric blastema
Fetal genital development - primarily internalGonadal ridge - Sex cord (Cortical cords, Testis cords)
Pronephric duct/Wolffian duct/mesonephric duct - Müllerian duct/paramesonephric ducts (Vaginal plate)
Primarily externalGenital tubercle - Phallus - Labioscrotal folds
Gubernaculum - Processus vaginalis
see also list of homologues of the human reproductive system
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