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The limbic system
1. THE LIMBIC SYSTEM By: Amuthameena A/P Manoharan Jayaganthan A/L Maunagar Thiaggu A/L Palan Muhammad Zahir B. MohdSabri
2. HIGHLIGHTS Definition Anatomical structures Connecting pathways Afferent connections of the hippocampus Efferent conections of the hippocampus Functions
3. The Limbic System Used to include a group of structures that lie in the border zone between the cerebral cortex and the hypothalamus. Controls behaviour, emotion, and drive; also appears to be important to memory.
11. Afferent Connections of the Hippocampus Cingulategyrus pass to the hippocampus. Septal nuclei (nuclei lying within the midline close to the anterior commissure) pass posterior in the fornix to the hippocampus One hippocampus pass across the midline to the opposite hippocampus in the commissure of the fornix. Indisiumgriseum pass posteriorly in the longitudinal striae to the hippocampus. Entorhinal area or olfactory-associated cortex pass to the hippocampus. Dentate and parahippocampalgyri travel to the hippocampus.
12. Efferent Connections of the Hippocampus Posterior to the anterior commissure to enter the mammillary body, end in the medial nucleus. To end in the anterior nuclei of the thalamus. To enter the tegmentum of the midbrain To end in the septal nuclei, the lateral preoptic area, and the anterior par of the hypothalamus. Fibers join the striamedullaris thalami to reach the habenular nuclei.
13. Functions of the Limbic System Control the endocrine system; able to influence many aspects of emotional behaviour (fear, anger, sexual, etc.). Converting recent memory to long-term memory Integration and effective homeostatic responses to a wide variety of environmental stimuli.