Gross Anatomical Features of Calcarine Sulcus

Swayam Jothi. S.; Sujatha. N.; Hemanth Kommuru.; Balasubramanian; B.; Prabhakaran. E

Volume : III, Issue : V, May - 2014

Gross Anatomical Features of Calcarine Sulcus

Swayam Jothi. S. , Sujatha. N. , Hemanth Kommuru. , Balasubramanian, B. , Prabhakaran. E

Abstract :

The gross anatomical feature of Calcarine sulcus, its relation to Parieto–occipital sulcus was studied in 33 cereal hemispheres collected from the cadaver during the routine dissection is made use for the study. 14 specimens were from the right cereal hemispheres & 19 were from the left side.In 18 specimens (54.5%) anterior part of Calcarine sulcus appeared as the extension of the Parieto–occipital sulcus. Gyrus intervened between the Calcarine sulcus and splenium in 15 specimens (45.4%) as part of Cingular gyrus or unnamed gyrus.Calcarine sulcus did not reach the occipital pole in 8 specimens (24.1%) and hence was not limited by Lunate sulcus on the superolateral surface artery. In lesions of Occipital lobe though vision is affected macular sp� occurs due to dual supply from middle cereal artery mainly supplying the superolateral surface and from posterior cereal artery mainly supplying inferior surface and Occipital lobe on all the surfaces. In cases where the Calcarine sulcus is stopping short of Occipital pole, the dual supply is not possible and macular sp� is doubtful