c l i n i c a l f o l i o s : n a r r a t i v e





A D V E R T I S E M E N T

 

Developmental Origins of Abdominal Wall Hernias: 10

A D V E R T I S E M E N T

   
 

The apposition of layers cranially and caudally forms the foregut and hindgut, and leaves the midgut open to the yolk sac.       

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Developmental Origins of Abdominal Wall Hernias: 11

A D V E R T I S E M E N T

   
 

The portion of the somite external to the central cavity becomes dermatome, while the internal portion differentiates into sclerotome and myotome. The sclerotome cells migrate centrally during week 4 to form the vertebrae and later skeletal structures.       

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Developmental Origins of Abdominal Wall Hernias: 12

A D V E R T I S E M E N T

   
 

The myotome divides into a small dorsal (epaxial) and larger ventral (hypaxial) portion, supplied by primary dorsal and ventral spinal nerves respectively.       

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This page was last modified on 9/21/2001.