The Importance Of The Human Brain

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The human brain is very complex is structure and function. What the brain does and how it plays a key part in everyday life functions such as moving, eating, and temperature control. The brain has four different lobes that function and perform differently from the other. The Adult human brain weighs about 3 lbs. containing about 85% water that consists of gelatin and over 100 billion neurons (Bostwick & Weber, 2013). The brain is responsible for controlling the bodies many functions and interactions with the outside world. The Nervous system directs all the functions of the human body making the Nerve cells or neuron the basic element of the nervous system. Neurons are highly specialized cells that vary greatly in functions (Bostwick & Weber, …show more content…

Neurons have three basic parts; Cell body, Dendrites, and Axon, generally covered by fatty tissues called Myelin Sheath. All neurons have two basic properties; Excitability- The ability to respond to a stimulus (anything that arouses a response) and Conductivity- The ability to transmit a signal (Bostwick & Weber, 2013). The Central Nervous system is the Brain, Spinal cord, and sense organ (eyes) controlling the thought processes, guiding movements, and registration of the sensations throughout the body (Bostwick & Weber, 2013). Another important part of the brain is the Brainstem. The Brainstem is made up of Midbrain, involved with visual reflexes, pons (Controlling certain respiratory functions) and the Medulla Oblongata (containing a center that regulates heart and lung functions, swallowing, vomiting, coughing, and sneezing. The midbrain connects to the cerebrum above the pons which lies between the midbrain and the medulla oblongata, which connects the spinal cord (Bostwick & Weber,

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