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Parasympathetic Division
...  at the pelvis, thorax and abdomen or in the head. Preganglionic neurons are produced in the spinal column and the brain. Majority of the neurons in the parasympathetic division originate from the midbrain, the pons and the medulla oblongata. The effects of the action of the parasympathetic division are opposite to that of sympathetic, and the process is “rest and digest” instead  ...

Basal Nuclei
...  one function. These are the corpus striatum and the substantia nigra. The corpus striatum differs from substantia nigra because it is found within the cerebrum, while the latter is found in the midbrain. Both of these types should exist in congruence with each other so that proper coordination or movements would occur. Anatomy The basal nuclei are connected to the thalamus, the cerebral  ...

Mesencephalon
...  brain of a developing animal is formed from the neural tube which will later turn into 3 vesicles: forebrain, midbrain and hindbrain. The middle vesicle mentioned beforehand is the so-called mesencephalon. It is considered to be a part of the brain stem in mature human brains, and becomes among the less differentiated ones. Mesencephalon is composed of two regions: the tectum (roof), and the  ...

Pons
...  the skeletal muscle contraction. The distinct characteristic of the pons is its circular bulge which lies on the brain’s inferior side. It could be seen between the medulla oblongata and the midbrain. It is created in through tracts of white colored fiber in two principle directions. One, it transversely extends throughout the middle part of cerebellar peduncles. The surface then makes a  ...

Reticular Formation
...  nuclei within the brain stem. Its network aids in creating the reticular activating system, the one that is responsible for the cerebrum. This network is extended until the spinal cord, the pons, midbrain, thalamus and hypothalamus. Most of the structures in the brain send and receive fibers which go up and down within the entire reticular formation. The network’s nuclei continuously  ...

Ventricles Of The Brain
...  between the cerebellum and the pons, and connecting it with the third ventricle is the mesencephalic aqueduct. It then completes the link of these four ventricles, as it is transversed in the midbrain. Although the fourth ventricle plays several roles for the function of the nervous system, one of its responsibilities is to communicate with the central canal of the spinal cord. It also  ...


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