and controls mouth movements. The spinal cord is made up of gray and white matter, with the white matter surrounding the gray. The fuctions it controls are involuntary. These character education thesis papers substances are called neurotransmitters because they transmit data from one neuron to another. Examples of involuntary functions are controlling heart rate, blood circulation, respiration, and digestion.
1992, 94, 97, 98, MJ Farabee;. The spinal nerves leave the spinal cord at the small of the back. Each hemispheres control the motor (movement) and sensory (sight, smell, hearing, taste, and touch) functions of the other side of the body. Each of these nerve trunks is attacked to the cord in two places. The Cranial Nerves come from the lower part of the brain. The peripheral nervous system also has 31 pairs of spinal nerves and 12 pairs of cranial nerves. For example, the sympathetic system speeds up the heartbeat, while the parasympathetic system slows down heartbeat. The synapse is a gap between the axon and the adjacent neuron, which is where data is transmitted from one neuron to another. Both of these systems work in the reverse order to balance out the other. Adrenaline excites the heart to increases muscle strength, like the reaction that comes dissertation proposal powerpoint drug pharmacology from anxiety. Sensory fibers carry signals from the skin, muscles, and other parts of the body to the spinal cord.