← Health Ch. 15 lesson 4 Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All central nervous system brain and spinal cord peripheral nervous system includes nerves that extend from the brain, spinal cord, and sensory receptors, gathering information from inside and outside your body neurons nerve cells, sensory, motor and interneurons spinal cord a long column of nerve tissue about the thickness of your index finger, extending about 18 inches down your backe vertebrae the bones that make up your spine. cerebrum the largest and most complex part of the brain and is responsible for conscious thought, learning and memory cerebellum the second largest part of the brain that coordinates the movement of skeletal muscles brain stem a three inch stalk of nerve cells and fibers that connects the spinal cord to the rest of the brain quadriplegia an injury to the upper part of the spinal cord resulting in the loss of use in arms and legs paraplegia an injury to the lower part of the spinal cord resulting in loss of use in legs Parkinson's disease the destruction of nerve cells in an area of the brain that helps coordinate skeletal muscles movement. Results in muscle tremors. Multiple sclerosis destruction of the myelin sheath that surrounds the axons of neurons in the CNS. Results in nerve damage Alzheimer's disease neurons in the brain are destroyed resulting in confusion, loss of memory and gradual mental deterioration. Epilepsy a disorder of the nervous system that is characterized by recurrent seizures, uncontrolled electrical activity in the brain. Cerebral palsy a group of nonprogressive neurological disorders that are the result of damage to the brain before, during or just after birth or in early childhood.