BIOB32H3 Lecture Notes - Medial Longitudinal Fissure, Neural Groove, Coccyx
28 Mar 2013
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Document Summary
The brain: composed of wrinkled, pinkish gray tissue, surface anatomy includes cerebral hemispheres, cerebellum, and brain stem. Primary brain vesicles: the anterior end of the neural tube expands and constricts to form the three primary brain vesicles, prosencephalon the forebrain, mesencephalon the midbrain, rhombencephalon hindbrain. Secondary brain vesicles: in week 5 of embryonic development, secondary brain vesicles form, telencephalon and diencephalon arise from the forebrain, mesencephalon remains undivided, metencephalon and myelencephalon arise from the hindbrain. Adult neural canal regions: adult structures derived from the neural canal, telencephalon lateral ventricles, diencephalon third ventricle, mesencephalon cerebral aqueduct, metencephalon and myelencephalon fourth ventricle. Functional areas of the cerebral cortex: three types of functional areas are, motor areas control voluntary movement, sensory areas conscious awareness of sensation, association areas integrate diverse information. Cerebral cortex: motor areas: primary (somatic) motor cortex, premotor cortex, broca"s area, frontal eye field.
