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The Brain Essay

924 words - 4 pages

The Brian
Shawaun Cunningham
PSY240
May 1, 2011
RaTonya Bennett

The Brian

The brain is consisting of three main sections. They are the forebrain, the midbrain and the hindbrain. These are connected to the central nervous system of the spinal cord (Pinel, 2011). The three sections of the brain can be subdivided into five main structures. The forebrain is where the two main structures reside; this includes the telencephalon and diencephalon which are located within the central nervous system. The midbrain is where the mesencephalon is located along with the hindbrain; the forebrain has the two final structures which are metencephalon and myelencephalon these main structures reside ...view middle of the document...

The cerebellum controls the sensory motor function throughout the entire body (Pinel, 2011).

The midbrain is where the mesencephalon can be divided in two structures. The tectum contains two areas known as the colliculi. The posterior colliculi can affect the visual functioning that can also impact the auditory functions. This next structure is the second division of the mesencephalon which is called the tegmentum. This tegementum has three structures that are known as the periaqueductal gray, the substantia nigra and the red nucleus. The periaqueductal gray is connected to the third and fourth ventricles and has a role in reducing pain (Pinel, 2011).

Diencephalon is the two main structures that is located within the forebrain, the structures of the diencephalon is known as the thalamus which is responsible for receiving and processing further transmitting signals throughout the area of the sensory cortex (Pine, 2011). The second structures of the diencephalon and the hypothalamus can motivate behaviors which releases hormones from the pituitary gland. The hormones in the pituitary gland are responsible for the production of the body’s nasal mucus. The motor cortex that issues the 600 muscles of the body that produce movement is a part of the forebrain frontal lobe. The cerebral cortex helps process sensory information to the brain. It also gives a direct motor response to make up the association cortex. Inside the forebrain is where the diencephalon’s several structures, which is thalamus. This particular structure allows the reception and the transmission of signals to the sensory cortex. There are other structures found on the surface of which is located in the diencephalon and that is the hypothalamus. The hypothalamus has structures that are located on the surface that includes the mammillary bodies of optic chiasm where the optic nerve converge is located. The...

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