nervous system part 1

nervous system part 1 - The CNS Overview Spinal Cord Spinal...

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Unformatted text preview: The CNS Overview Spinal Cord Spinal Cord Gray matter cell bodies White matter mostly axons Organization / Terminology Organization / Terminology Cerebrum / Cerebral Hemispheres Divided into 2 halves = Hemispheres Big space betw = Longitudinal Fissure Connected by CORPUS CALLOSUM Surface not smooth folded FOLD = gyrus gyrus (pl. = gyri) SPACE BETW = sulcus sulcus (pl. = sulci) Gyrus Sulcus (cant see here) Cerebrum / Cerebral Hemispheres Further Subdivided into 4 LOBES based on anatomy and function: FRONTAL LOBE PARIETAL LOBES OCCIPITAL LOBE TEMPORAL LOBE Special Names for dividers of the lobes: CENTRAL SULCUS divides frontal from parietal LATERAL SULCUS/FISSURE divides temporal from frontal/parietal PARIETO-OCCIPITAL SULCUS divides parietal from occipital Central sulcus Central sulcus Parieto-Occipital sulcus Parieto-Occipital sulcus Parieto-Occipital Parieto-Occipital sulcus sulcus Cerebrum / Cerebral Hemispheres Parietal Lobe Occipital Lobe Temporal Lobe Frontal Lobe C e n t r a l S u l c u s C e n t r a l S u l c u s L a t e r a l S u l c u s / F i s s u r e L a t e r a l S u l c u s / F i s s u r e P a r i e t o- O c c i p i t a l S u l c u s P a r i e t o- O c c i p i t a l S u l c u s Cerebrum / Cerebral Hemispheres Insula fifth lobe Deep to frontal, parietal and temporal lobes Separate lateral fissure lateral fissure to inspect Cerebrum / Cerebral Hemispheres Midsagital Section Corpus Callosum Parieto- Occipital Sulcus Cerebral Cortex Corups Callosum Cerebral Cortex Primary/Assoc. Areas Primary Motor Cortex Primary Motor Cortex (ANATOMICALLY = (ANATOMICALLY = PRECENTRAL GYRUS PRECENTRAL GYRUS ) Voluntary movement Voluntary movement Axons from here form Axons from here form CORTICOSPINAL TRACT CORTICOSPINAL TRACT thru brainstem and spinal cord thru brainstem and spinal cord Synapse on MOTOR NEURONS that control skeletal Synapse on MOTOR NEURONS that control skeletal muscles muscles...
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nervous system part 1 - The CNS Overview Spinal Cord Spinal...

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