memmlers WB nervous system Ch 9 Exam Questions and Answers 100% Pass

memmlers WB nervous system Ch 9 Exam Questions and Answers 100% Pass the functional division that controls the heart... - Answer- autonomic nervous system the functional division that controls skeletal muscles... - Answer- somatic nervous system the system that promotes the fight-or-flight response... - Answer- sympathetic nervous system the system that stimulates the activity of the digestive tract... - Answer- parasympathetic nervous system the structural division that includes the brain... - Answer- central nervous system the structural division that includes the cranial nerves... - Answer- peripheral nervous system a neuron fiber that carries impulses away from the cell body... - Answer- axon the part of the neuron that receives a stimulus... - Answer- dendrites the sheath around some neuron fibers that aids in regeneration... - Answer- neurilemma a gap in the neuron sheath... - Answer- node the portion of the spinal cord made up of myelinated axons... - Answer- white matter neural tissue composed of cell bodies & unmyelinated axons... - Answer- gray matter the scientific name for a nerve cell... - Answer- neuron a bundle of neuron fibers located outside the central nervous system... - Answer- nerve a bundle of neuron fibers located within the central nervous system... - Answer- tract neurons that conduct impulses towards the brain... - Answer- sensory neurons neurons that conduct impulses away from the brain... - Answer- motor neurons the coating of an individual neuron... - Answer- endoneurium the coating of an entire nerve... - Answer- epineurium list 5 functions of neuroglia... - Answer- - protect nervous tissue - support nervous tissue & bind it to other structures - help repair cells - remove pathogens & impurities - regulate fluid composition in neural tissue the step in which the membrane potential returns to rest... - Answer- repolarization the ion that crosses the neuron membrane to cause depolarization... - Answer- Na+ the result of positive ions entering the neuron... - Answer- depolariz