A brain region {limbic system}| {threshold system} {limbic lobe} on frontal-lobe interiors surrounds brainstem. In mammals, limbic system includes amygdala, caudate, cingulate gyrus, entorhinal cortex, fornix, hippocampus, hypothalamus, olfactory cortex, pyriform cortex, preoptic, putamen, septum, and thalamus. It receives from hypothalamus and basal ganglia. It sends to sense and motor cerebral cortex. It connects to sympathetic nervous system for activity and parasympathetic nervous system for relaxation.
Limbic system organizes essential drives, controls visceral processes, and involves emotions, fear, anger, flight, defense, and instincts. It does not integrate emotions.
evolution
Limbic system developed in primitive fish and is the most-ancient cerebral-hemisphere part. Limbic system is more important in mammals that rely on smell more than vision and less important in aquatic mammals and primates.
damage
Damage reduces cerebrum activity, and people enter dreamy state.
Biological Sciences>Zoology>Organ>Nerve>Brain>Cerebrum>Limbic System
4-Zoology-Organ-Nerve-Brain-Cerebrum-Limbic System
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Date Modified: 2022.0224