The Brain

Topics: Cerebrum, Brain, Basal ganglia Pages: 3 (942 words) Published: May 5, 2013
The Brain has five major structures . These structures include the mesencephalon, metencephalon, myelencephalon (or medulla), telencephalon, and diecephalon. All of these brain structures contribute different functions within the human body.

The brain’s first structure is the myelencephalon, which is also called the medulla. The myelencephalon is known as the most posterior part of the brain. The structure of the myelencephalon is made up of bundles of axons called tracts. These tracts carry signals between the rest of the body and the brain. The myelencephalon also contains a reticular formation, which consists of a complex system of 100 tiny nuclei occupy the central core of the brain stem from the bottom extremity of the myelencephalon to the top extremity of the midbrain. Some parts of the reticular formation play a role in arousal. The different nuclei in the reticular formation involves a variety of different functions such as The reticular formation consists of different functions which are involved in a variety of such as movement, sleep regulation, muscle tone management, attention, reflexes of the cardiac, respiratory and circulatory. Responsible for controlling autonomic functions such as heart rate, breathing and digestion describes the myelencephalon structure.

The metencephalon is the second structure of the brain. And like the medulla, it houses parts of the reticular formation and tracts that are also located in the myelencephalon. The pons and the cerebellum are the two parts which make up the metencephalon.The pons also consists of some of the tracts and reticular formation as in the myelencephalon. A very important sensorimotor is the cerebellum. The functions of the cerebellums also include posture maintenance and muscle movement coordination. The metecephalons functions are arousal, sleep; assist in controlling autonomic functions; such as sending sensory information between the cerebrum and cerebellum and controlling movement....
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