Health and Social Care Level 2 Unit 7 P2

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The nervous System The brain In the body this acts as a control centre. It job is to receive and interprets impulses from the receptors (sense) in the body and then sends impulses to make glands and muscles work. The brain correspondents the body and it movements and helps it to function properly. It controls eating, sleeping, temperature regulation and salt and water balance in the body. The brain also stores the information in the memory and helps with emotional and intellectual process. The brain is like a control centre to the rest of the body it also detects the changes and responds to them. The spinal cord is a long cylindrical organ that runs inside the vertebrae. In a spinal canal has a central cavity containing cerebrospinal fluid thirty one of nerves branches off the cord to provide nerve supply to the whole of the human body. The brain stem (midbrain pons and medulla oblongata) Controls involuntary reflex actions The cerebellum Maintains posture and co-ordinates movement. It received messages from the cerebrum and muscles and joints The diencephalon (includes the thalamus and hypothalamus Controls homeostatic mechanisms and the autonomic nervous system The cerebrum The largest part of the brain, divided into three areas that control movement, interpret sensory impulses and control of thought, memory, emotions and personality traits Nerves Nerves are compiled of neurons or nerve cells. These cells can vary in structure this depends on two different things: 1. Where they are 2. What they do But all cells have cell body’s containing the nucleus. There are processes that your body will go through 1. You touch a hot radiator (You have receptors at the end of every sensory neuron which transmits a message to your brain about what you are feeling) 2. A message will go to your brain and say that the radiator is hot. 3. Your

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