The limbic system is deep in the cerebrum and performs numerous functions. The system has an important role in memory and in emotions (both positive and negative). The sense of smell enters the limbic system and has interpretive centers there. The cingulate gyrus is a curved part of the system and coordinates sensory input with emotions. The hippocampus and amygdala are also parts of the limbic system. The amygdala plays a role in both arousal and aversion and the hippocampus is involved in memory formation. The hippocampal gyrus is part of the temporal lobe and takes sensory information to the hippocampus. Memory apparently enters the limbic system as damage to the limbic system impairs memory formation. The storage of memory occurs in other parts of the brain. The mammillary body receives olfactory inputs and the fornix connects the mammillary body to the hippocampus. Label and color the parts of the limbic system.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.