Limbic System Flashcards
Other name for limbic system
paleomammalian brain
Where is the ruff location of the limic system
a complex set of brain structures that lies on both sides of the thalamus, right under the cerebrum.
List three important structures in the limbic system
olfactory bulbs, hippocampus, amygdala, anterior thalamic nuclei, fornix, column of fornix, mamillary body, septum pellucidum, habenular commisure, cingulate gyrus, parahippocampal gyrus, limbic cortex, limbic midbrain areas and pons.
List five functions of the limbic system
emotion, behavior, motivation, long-term memory, and olfaction
The limbic system is primarily responsible for which functions (two)
emotional life and formation of memories
The term “limbic” comes from the which Latin word. What does it mean?
limbus. Meaning “border” or “edge”, or, particularly in medical terminology, a border of an anatomical component.
Paul Broca coined the term based on its physical location in the brain, sandwiched between two functionally different components.
The limbic system is the set of brain structures that forms the inner border of the ______
cortex
The components of the limbic system have more or fewer layers than the classical 6-layer neocortex
fewer and sometimes classified as allocortex or archicortex.
Just read Hippocampus
Hippocampus:Required for the formation of long-term memories and implicated in maintenance of cognitive maps for navigation. The hippocampus consists of two “horns” that curve back from the amygdalae. It appears to be very important in converting things that are “on one’s mind” at the moment (in short-term memory) into things that one will remember for the long run (long-term memory). If the hippocampus is damaged, a person cannot build new memories and lives instead in a strange world where everything he or she experiences just fades away, even while older memories from the time before the damage are untouched
Just read Amygdala
Amygdala: Involved in signaling the cortex of motivationally significant stimuli such as those related to reward and fear in addition to social functions such as mating. Furthermore, the anatomy of amygdalae are two almond-shaped masses of neurons on either side of the thalamus at the lower end of the hippocampus. The amygdalae stimulate the hippocampus to remember many details surrounding the situation, as well.
Just read Fornix
Fornix: is a C-shape bundle of axon that carries signals from the hippocampus to the mammillary bodies and septal nuclei.
Just read Mammillary body
Mammillary body: locates at the ends of the anterior arches of the fornix. It is involved with the process of recognition memory.
Just read Septal nuclei
Septal nuclei: Located anterior to the interventricular septum, the septal nuclei provide critical interconnections. The septal area isn’t related to the sense of smell, but is the pleasure zone in animals.
Just read part of limbic lobe….Parahippocampal gyrus
Parahippocampal gyrus:Plays a role in the formation of spatial memory.
Just read part of limbic lobe….Cingulate gyrus
Cingulate gyrus:Autonomic functions regulating heart rate, blood pressure and cognitive and attentional processing.