In stage of ventral formations: Disturbances of formation of the - TopicsExpress



          

In stage of ventral formations: Disturbances of formation of the cerebral hemispheres lead to holoprosencephaly & Schizencephaly. Holoprosencephaly is failure of brain to divide into left and right halves resulting in fusion & some loss of midline structures & fusion of lateral ventricles and the 3rd ventricle. In order of decreasing severity we have 3 holoprosencephaly : alobar ,semilobar & lobar holoprosencephaly. ALOBAR :Central monoventricle with absent &/or fused midline. SEMILOBAR :cerebral hemispheres fused anteriorly with dorsal cyst. LOBAR :cerebral hemispheres are not fused but fused frontal horns of the lateral ventricles with wide communicating with the third v. THE FOLLOWING ARE EXAMPLES OF WHAT?
Posted on: Mon, 05 Jan 2015 20:10:03 +0000

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