CINGULATE SULCUS  

 

Formation occurs in a predictable pattern.
 

5 Patterns Of Development

  1. Discontinuous line of sulcus appears (24 post menstrual weeks).
  2. Continuous line appears (26 ± 2 post menstrual weeks).
  3. First branches appear (marginal ramus) (32 ± 3 post menstrual weeks).
  4. Multiple branches of the primary sulcus (34 ± 3 post menstrual weeks)
  5. Multiple branches appear and merge with other sulci (cobblestone appearance, after 38 post menstrual weeks).

 

Cingulate gyrus (brown color)

Su – cingulated sulcus; CC – corpus callosum

CN – caudate nucleus; Thl – Thalamus

CP – Choroid plexus