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Unformatted text preview: to grow over &amp; enclose the diencephalons &amp; midbrain- by week 26, continued growth of the cerebrum causes its surfaces to crease &amp; fold into convolutions Brain Regions:- cerebral hemispheres- brain stem : inferior portion; continuous with spinal cord o midbrain, pons &amp; medulla oblongata- diencephalon : superior to brain stem o thalamus, hypothalamus, epithalamus &amp; subthalamus- cerebellum: posterior to brain stem Ventricles of Brain:- lateral ventricles: deep within cerebral hemispheres, separated anteriorly by the septum pellucidum- third ventricle: in diencephalon; communicates with lateral ventricles via the intraventricular foramen- fourth ventricle: in hindbrain; continuous with third ventricle via the cerebral aqueduct (in midbrain)- apertures (openings) in the walls of the fourth ventricle connect the ventricles with the subarachnoid space surrounding the brain- the ventricles &amp; subarachnoid space are filled with cerebrospinal fluid Page1...
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- Fall '10
- Anthropology, Neural tube, cerebral hemispheres, Lateral ventricles