Divisions Of The Human Brain

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The brain is the most complex part of the human body. It is also the most powerful organ of the human body, although it only weighs approximately three pounds (Alzheimer’s Association, 2012). The brain is responsible for all thought and movement that your body produces. The complexity of the brain allows humans to interact with their environment and communicate successfully with others. The brain is not just one huge organ, it has numerous small divisions that enable humans to thrive and survive. The three main divisions of the brain are the forebrain, midbrain, and the hindbrain. The forebrain is the largest division of the human brain. This division of the brain is what differentiates humans from apes and other animals.The forebrain contains …show more content…
The midbrain acts as a relay station for auditory and visual information (Kumar, 2012). Not only does the midbrain control auditory and visual systems, it also controls eye movement. The midbrain has two main parts the tegmentum and the tectum. The Tegmentum is located within the brainstem and forms the base of the midbrain.The tegmentum consists of the reticular formation, periaqueductal grey matter, and the red nucleus. The reticular formation is involved in sleep, arousal, attention, and other basic reflexes. The periaqueductal grey matter controls instinct movements such as fighting and mating. The red nucleus helps with motor coordination. The tegmentum, altogether controls motor functions, regulates awareness and attention, and regulates a few autonomic functions (NINDS, 2015). The tectum is located towards the back of the midbrain. It has two parts, the superior colliculi, and the inferior colliculi. The tectum controls the auditory and visual responses. The colliculi are responsible for processing visual information from the ears and eyes. The superior colliculi processes visual information then relays it to the primary visual cortex which is located in the occipital lobe. The inferior has a different job, which is to process auditory information before the information is relayed to the primary auditory cortex (Davies,

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