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1.2.1 Pons. 1.2.2 Fourth ventricle. 1.2.3 Cerebellum. 2 Midbrain (mesencephalon) ... The human brain anatomical regions are ordered following standard neuroanatomy ...
Therefore, the set of anatomical structures considered part of the limbic system is controversial. The following structures are, or have been considered, part of the limbic system: [11] [12] Cortical areas: Limbic lobe; Orbitofrontal cortex: a region in the frontal lobe involved in the process of decision-making
A cross section of the lower part of the pons showing the pontine reticular formation labeled as #9. The human reticular formation is composed of almost 100 nuclei and contains many projections into the forebrain, brainstem, and cerebellum, among other regions. [6]
Why the cortex wrinkles and folds is not well-understood, but gyrification has been linked to intelligence and neurological disorders, and a number of gyrification theories have been proposed. [74] These theories include those based on mechanical buckling, [75] [19] axonal tension, [76] and differential tangential expansion. [75]
Ascending fibers are second-order axons projecting from the gustatory nucleus (the rostral part of the solitary nucleus] to the ventral posteromedial nucleus of thalamus [1] [3] (third-order neurons in turn project to the gustatory cortex).
Each pathway is a set of projection neurons, consisting of individual dopaminergic neurons. The four major dopaminergic pathways are the mesolimbic pathway, the mesocortical pathway, the nigrostriatal pathway, and the tuberoinfundibular pathway. The mesolimbic pathway and the mesocortical pathway form the mesocorticolimbic system.
The pons meets the medulla at the pontomedullary junction. [12] This region is supplied by the joining of the basilar, vertebral arteries. The posterior inferior cerebellar artery also joins from which a large number of perforating arteries arise. Lateral spinal arteries also emerge to supply the posterior surface of the medulla oblongata. [12]
The pons and medulla are major structures found there. A new region of the brain developed in mammals about 250 million years after the appearance of the hindbrain. This region is known as the paleomammalian brain, the major parts of which are the hippocampi and amygdalas, often referred to as the limbic system. The limbic system deals with ...