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Human embryo (photomicrograph)

Histological sagittal section of a human embryo, gestational age 7 weeks. Anterior direction is left. The notochord appears in the cervical bodies and in a zigzag course in the cranial base, ending rostrally close to the developing pituitary gland. A pronounced metachromatic cartilaginous tissue is seen close to the notochord. (Toluidine blue) (Reproduced with permission. J Craniofac Genet Dev Biol 1995;15:157-61.)

Related Media

Associated Disorders

  • Anencephaly
  • CHARGE syndrome
  • Cleft lip and palate
  • Duplication of pituitary stalk
  • Ectopic neurohypophysis
  • Empty sella syndrome
  • Holoprosencephaly
  • Hypertelorism
  • Midfacial anomalies
  • Myelomeningocele
  • Pallister-Hall syndrome
  • Pituitary agenesis
  • Pituitary aplasia
  • Pituitary dysplasia
  • Pituitary ectopia
  • Pituitary hypoplasia
  • Rachischisis
  • Rathke cleft cyst
  • Rieger syndrome
  • Rubinstein-Taybi syndrome
  • Septo-optic dysplasia
  • Solitary maxillary central incisor
  • Spina bifida