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Nervous System Test Review Miss Rodriquez & Mr Pitts Motor neurons carry impulses from the brain and spinal cord to the A. B. C. D. Heart Muscles and glands Touch receptors Bones and skin What is represented by the number 1? The gaps in the myelin sheath surrounding neuron extensions are called A. B. C. D. Schwann cells Motor neurons Myelin gaps Nodes of Ranvier What is represented by the number 2? What is represented by the number 3? Impulses moving from the brain to muscles and glands move through • • • • Autonomic nervous system Motor neurons Sensory neurons Central nervous system What is represented by the number 4? An action potential can be caused by A. B. C. D. Resting Cutting a neuron Electrically stimulating a neuron Drinking water What is represented by the number 5? Resting potential in neurons is restored by • • • • The sodium-potassium pump The calcium influx ATP from respiration Glucose from photosynthetic tissues in human skin and hair What is represented by the number 6? Refer to the diagram. What happens when an action potential travels along a neuron A. B. C. D. K+ ions are pumped into the axon Resting potential does not change A small part of the axon reverses polarity Na+ ions rush out of the cell What is represented by the number 1? What is the function of brain area A? There are many more sodiums outside a neuron than inside when A. B. C. D. the action potential sweeps by during the state of resting potential a small part of the axon reverses polarity an the neuron dies What is the function of brain area B? Which of the following involves 2 or 3 neurons, is not learned, and is not a conscious thing? A. B. C. D. Digestive processes Control of heart rate Lifting weights Reflexes What is represented by letter A? What is the gap between these neurons called? Extensions from a neuron that receive input are A. B. C. D. Axons Dendrites Motor neurons Autonomic neurons Neurotransmitters are released into the synapse when A. You are startled B. An action potential reaches the end of the axon C. An action potential reaches the end of the dendrite D. You take morphine or other narcotic drugs What is the function of brain area C? What is represented by letter B? Insulating axons and speeding the impulse transmission is the job of A. B. C. D. Nodes of Ranvier Dendrites Sodium-potassium pumps Myelin sheaths What is the function of brain area D? What is the function of brain area E? What is represented by letter C? The brain and spinal cord are the A. B. C. D. CNS / Central Nervous System PNS / Peripheral Nervous System Motor Neurons Sensory Neurons What is the function of brain area F? What is represented by letter D? Messages from receptors are transmitted to the CNS by A. B. C. D. Autonomic Neurons Somatic neurons Motor Neurons Sensory Neurons What is represented by letter E? Pathways to and from the CNS are provided by the A. B. C. D. Autonomic Neurons Somatic neurons PNS / peripheral nervous system Sensory Neurons What is represented by letter F? Involuntary functions of the internal organs are controlled by the A. B. C. D. Autonomic nervous system Somatic nervous system Motor Neurons Sensory Neurons The sympathetic nervous system responds to A. B. C. D. Typical homeostatic moments Situations involving relaxation Situations of threat Situations of low blood sugar