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CH 8 Nervous System Student: ___________________________________________________________________________ 1. The resting membrane potential A. occurs because the cell membrane is more permeable to potassium ions than sodium ions. B. partly results from the sodium-potassium exchange pump. C. occurs because the cell membrane remains polarized at rest. D. occurs because there are negatively charged proteins and ions inside the cell. E. has all of these contributing factors. 2. Cranial nerves may contain A. sensory (afferent) neurons. B. motor (efferent) neurons. C. parasympathetic (efferent) neurons. D. any or all of these nerve cell types. 3. Chuck Wildlee, a baseball pitcher, was struck on the head by a line drive hit by Charley Hussel. Fortunately, Chuck was not seriously injured, but when he was revived, he could not remember how many balls and strikes the batter had. This was because A. sensory memory had not been converted to short-term memory. B. short-term memory had not been converted to sensory memory. C. he lost both sensory and short-term memory. D. long-term memory had not been converted to a memory engram. E. long-term memory had not been converted to sensory memory. 4. The part of the brainstem that regulates heart rate, breathing, swallowing, coughing, and sneezing is A. the cerebrum. B. the medulla oblongata. C. the pons. D. the midbrain. E. the spinal cord. 5. The effects of aging on the nervous system include all of the following EXCEPT: A. decrease in the number of sensory neurons B. neuronal function decreases C. decrease in the number of motor neurons D. size and weight of brain decreases E. Neuron plasma membranes become more flexible therefore increasing the ability of the neurons to function. 6. The _________ consists of the brain and spinal cord. A. central nervous system B. somatic motor nervous system C. sympathetic division of the autonomic nervous system D. parasympathetic division of the autonomic nervous system E. afferent division of the peripheral nervous system 7. The limbic system A. includes the olfactory cortex and portions of the diencephalon and portions of the cerebrum. B. influences emotions, motivation and mood. C. is functionally associated with the hypothalamus. D. initiates responses necessary for survival, such as hunger and thirst. E. has all of these properties. 8. Chemical substances released from the presynaptic terminal A. bind to receptors on the postsynaptic membrane. B. may inhibit or stimulate an action potential in the postsynaptic membrane depending on the receptors. C. are normally broken down by enzymes located in the synapse. D. are called neurotransmitters. E. have all of these properties. 9. Which type of cell has several dendrites and one axon? Most motor neurons fit into this classification. A. unipolar neuron B. Schwann cell C. bipolar neuron D. multipolar neuron E. pyramidal cell 10. Gaps between segments of oligodendrocytes or between individual Schwann cells are called A. ganglia. B. microglia. C. nodes of Ranvier. D. ependymal cells. E. nerve tracts. 11. The most inferior portion of the diencephalon, which is very important in control of body temperature, hunger, and thirst, and also controls the pituitary gland is the A. cerebrum. B. hypothalamus. C. mammillary bodies. D. pineal body. E. infundibulum. 12. Below are given the steps of the patellar reflex arc. What is the correct order of events from the time the hammer taps the patellar ligament to the knee jerk response? 1) The leg extends at the knee. 2) Sensory neurons conduct the action potentials to the spinal cord. 3) Motor neurons are stimulated and generate an action potential. 4) Sensory neurons synapse with motor neurons in the spinal cord. 5) The AP travels to the quadriceps femoris and cause it to contract. 6) Sensory receptors in the muscle detect the stretch of the tendon and muscles. A. 3, 4, 6, 2, 5, 1 B. 6, 2, 4, 3, 5, 1 C. 5, 3, 6, 2, 4, 1 D. 6, 5, 4, 2, 3, 1 E. 1, 5, 3, 4, 2, 6 13. Reception and evaluation of most sensory information, such as touch, balance, and taste are all associated with A. the temporal lobes. B. the frontal lobes of cerebral cortex. C. the parietal lobes of cerebral cortex. D. the occipital lobes of the cerebral cortex. E. the cerebellum. 14. Action Potentials (A.P.) A. normally decay rapidly as they spread through a cell. B. vary inversely in amplitude with the magnitude of stimulus that triggers A.P. C. vary directly in amplitude with the magnitude of the stimulus that triggers them. D. do not vary in amplitude with the size of the stimulus that triggers the A.P. E. None of these are true characteristics of A.P. 15. When a doctor gives a patient epidural anesthesia, they are inserting a needle between which two structures? A. pia mater and arachnoid mater B. body of the vertebrae and dura mater C. spinal cord and arachnoid mater D. periosteum and dura mater E. dorsal root ganglion and the transverse process 16. Which type of cell is composed of one dendrite and one axon, and is found in the eye and nose? A. unipolar neuron B. Schwann cell C. bipolar neuron D. multipolar neuron E. pyramidal cell 17. The corpus callosum A. consists of a broad band of white tracts. B. is found at the base of the longitudinal fissure. C. is the largest of the commissures. D. allows sensory information to be shared between the two cerebral hemispheres. E. has all of these characteristics. 18. Basal nuclei A. contains the corpus striatum. B. contains the substantia nigra. C. are important in planning, organizing and coordinating motor movements. D. are linked with the thalamus and cerebral cortex. E. have all of these characteristics. 19. Dorsal roots of the spinal cord A. have dorsal root ganglia. B. have efferent nerve processes. C. contain neurons that carry action potentials away from the spinal cord. D. unite with other dorsal roots to form spinal nerves. E. have all of these characteristics. 20. The parasympathetic division of the autonomic nervous system A. is involved in vegetative activities, such as digestion, urination, and defecation. B. has postganglionic cell bodies in terminal ganglia, located either near or within target organs. C. has both preganglionic and postganglionic neurons that secrete acetylcholine. D. has preganglionic cell bodies located in cranial and sacral areas. E. has all of these characteristics. 21. Which type of cell has a single process that functions as an axon and dendrite? Most sensory neurons fit into this classification. A. unipolar neuron B. Schwann cell C. bipolar neuron D. multipolar neuron E. pyramidal cell 22. Which of these is NOT a type of neuroglia cell? A. astrocyte B. microglia C. ganglionic cell D. Schwann cell E. ependymal cell 23. Clusters of neuron cell bodies located in the PNS are called A. nuclei. B. nerve tracts. C. nerves. D. ganglia. E. nodes of Ranvier. 24. Spinal nerves A. are organized into plexuses, except for T2 to T11. B. contain both afferent and efferent fibers. C. mostly exit between adjacent vertebrae. D. have both autonomic and somatomotor efferent fibers. E. have all of these characteristics. 25. Four mounds, found in the roof of the midbrain, which are involved in integration of hearing and visual reflexes are A. the medullary pyramids. B. the reticular formation. C. the pons. D. the colliculi. E. both the medullary pyramids and the pons. CH 8 Nervous System Key 1. The resting membrane potential a. occurs because the cell membrane is more permeable to potassium ions than sodium ions. b. partly results from the sodium-potassium exchange pump. c. occurs because the cell membrane remains polarized at rest. d. occurs because there are negatively charged proteins and ions inside the cell. E. has all of these contributing factors. Difficulty: Moderate Seeley - 008 Nervous... #10 Type: Knowledge 2. Cranial nerves may contain a. sensory (afferent) neurons. b. motor (efferent) neurons. c. parasympathetic (efferent) neurons. D. any or all of these nerve cell types. Difficulty: Moderate Seeley - 008 Nervous... #28 Type: Knowledge 3. Chuck Wildlee, a baseball pitcher, was struck on the head by a line drive hit by Charley Hussel. Fortunately, Chuck was not seriously injured, but when he was revived, he could not remember how many balls and strikes the batter had. This was because a. sensory memory had not been converted to short-term memory. b. short-term memory had not been converted to sensory memory. C. he lost both sensory and short-term memory. d. long-term memory had not been converted to a memory engram. e. long-term memory had not been converted to sensory memory. Difficulty: Moderate Seeley - 008 Nervous... #56 Type: Application 4. The part of the brainstem that regulates heart rate, breathing, swallowing, coughing, and sneezing is a. the cerebrum. B. the medulla oblongata. c. the pons. d. the midbrain. e. the spinal cord. Difficulty: Moderate Seeley - 008 Nervous... #30 Type: Knowledge 5. The effects of aging on the nervous system include all of the following EXCEPT: a. decrease in the number of sensory neurons b. neuronal function decreases c. decrease in the number of motor neurons d. size and weight of brain decreases E. Neuron plasma membranes become more flexible therefore increasing the ability of the neurons to function. Difficulty: Easy Seeley - 008 Nervous... #76 Type: Knowledge 6. The _________ consists of the brain and spinal cord. A. central nervous system b. somatic motor nervous system c. sympathetic division of the autonomic nervous system d. parasympathetic division of the autonomic nervous system e. afferent division of the peripheral nervous system Difficulty: Easy Seeley - 008 Nervous... #62 Type: Knowledge 7. The limbic system a. includes the olfactory cortex and portions of the diencephalon and portions of the cerebrum. b. influences emotions, motivation and mood. c. is functionally associated with the hypothalamus. d. initiates responses necessary for survival, such as hunger and thirst. E. has all of these properties. Difficulty: Moderate Seeley - 008 Nervous... #47 Type: Knowledge 8. Chemical substances released from the presynaptic terminal a. bind to receptors on the postsynaptic membrane. b. may inhibit or stimulate an action potential in the postsynaptic membrane depending on the receptors. c. are normally broken down by enzymes located in the synapse. d. are called neurotransmitters. E. have all of these properties. Difficulty: Moderate Seeley - 008 Nervous... #16 Type: Knowledge 9. Which type of cell has several dendrites and one axon? Most motor neurons fit into this classification. a. unipolar neuron b. Schwann cell c. bipolar neuron D. multipolar neuron e. pyramidal cell Difficulty: Easy Seeley - 008 Nervous... #68 Type: Knowledge 10. Gaps between segments of oligodendrocytes or between individual Schwann cells are called a. ganglia. b. microglia. C. nodes of Ranvier. d. ependymal cells. e. nerve tracts. Difficulty: Easy Seeley - 008 Nervous... #5 Type: Knowledge 11. The most inferior portion of the diencephalon, which is very important in control of body temperature, hunger, and thirst, and also controls the pituitary gland is the a. cerebrum. B. hypothalamus. c. mammillary bodies. d. pineal body. e. infundibulum. Difficulty: Moderate Seeley - 008 Nervous... #36 Type: Knowledge 12. Below are given the steps of the patellar reflex arc. What is the correct order of events from the time the hammer taps the patellar ligament to the knee jerk response? 1) The leg extends at the knee. 2) Sensory neurons conduct the action potentials to the spinal cord. 3) Motor neurons are stimulated and generate an action potential. 4) Sensory neurons synapse with motor neurons in the spinal cord. 5) The AP travels to the quadriceps femoris and cause it to contract. 6) Sensory receptors in the muscle detect the stretch of the tendon and muscles. a. 3, 4, 6, 2, 5, 1 B. 6, 2, 4, 3, 5, 1 c. 5, 3, 6, 2, 4, 1 d. 6, 5, 4, 2, 3, 1 e. 1, 5, 3, 4, 2, 6 Difficulty: Easy Seeley - 008 Nervous... #26 Type: Knowledge 13. Reception and evaluation of most sensory information, such as touch, balance, and taste are all associated with a. the temporal lobes. b. the frontal lobes of cerebral cortex. C. the parietal lobes of cerebral cortex. d. the occipital lobes of the cerebral cortex. e. the cerebellum. Difficulty: Moderate Seeley - 008 Nervous... #70 Type: Knowledge 14. Action Potentials (A.P.) a. normally decay rapidly as they spread through a cell. b. vary inversely in amplitude with the magnitude of stimulus that triggers A.P. c. vary directly in amplitude with the magnitude of the stimulus that triggers them. D. do not vary in amplitude with the size of the stimulus that triggers the A.P. e. None of these are true characteristics of A.P. Difficulty: Moderate Seeley - 008 Nervous... #13 Type: Knowledge 15. When a doctor gives a patient epidural anesthesia, they are inserting a needle between which two structures? a. pia mater and arachnoid mater B. body of the vertebrae and dura mater c. spinal cord and arachnoid mater d. periosteum and dura mater e. dorsal root ganglion and the transverse process Difficulty: Moderate Seeley - 008 Nervous... #74 Type: Knowledge 16. Which type of cell is composed of one dendrite and one axon, and is found in the eye and nose? a. unipolar neuron b. Schwann cell C. bipolar neuron d. multipolar neuron e. pyramidal cell Difficulty: Easy Seeley - 008 Nervous... #66 Type: Knowledge 17. The corpus callosum a. consists of a broad band of white tracts. b. is found at the base of the longitudinal fissure. c. is the largest of the commissures. d. allows sensory information to be shared between the two cerebral hemispheres. E. has all of these characteristics. Difficulty: Easy Seeley - 008 Nervous... #44 Type: Knowledge 18. Basal nuclei a. contains the corpus striatum. b. contains the substantia nigra. c. are important in planning, organizing and coordinating motor movements. d. are linked with the thalamus and cerebral cortex. E. have all of these characteristics. Difficulty: Easy Seeley - 008 Nervous... #46 Type: Knowledge 19. Dorsal roots of the spinal cord A. have dorsal root ganglia. b. have efferent nerve processes. c. contain neurons that carry action potentials away from the spinal cord. d. unite with other dorsal roots to form spinal nerves. e. have all of these characteristics. Difficulty: Easy Seeley - 008 Nervous... #22 Type: Knowledge 20. The parasympathetic division of the autonomic nervous system a. is involved in vegetative activities, such as digestion, urination, and defecation. b. has postganglionic cell bodies in terminal ganglia, located either near or within target organs. c. has both preganglionic and postganglionic neurons that secrete acetylcholine. d. has preganglionic cell bodies located in cranial and sacral areas. E. has all of these characteristics. Difficulty: Moderate Seeley - 008 Nervous... #55 Type: Comprehension 21. Which type of cell has a single process that functions as an axon and dendrite? Most sensory neurons fit into this classification. a. unipolar neuron B. Schwann cell c. bipolar neuron d. multipolar neuron e. pyramidal cell Difficulty: Easy Seeley - 008 Nervous... #67 Type: Knowledge 22. Which of these is NOT a type of neuroglia cell? a. astrocyte b. microglia C. ganglionic cell d. Schwann cell e. ependymal cell Difficulty: Easy Seeley - 008 Nervous... #3 Type: Knowledge 23. Clusters of neuron cell bodies located in the PNS are called a. nuclei. b. nerve tracts. c. nerves. D. ganglia. e. nodes of Ranvier. Difficulty: Easy Seeley - 008 Nervous... #9 Type: Knowledge 24. Spinal nerves a. are organized into plexuses, except for T2 to T11. b. contain both afferent and efferent fibers. c. mostly exit between adjacent vertebrae. d. have both autonomic and somatomotor efferent fibers. E. have all of these characteristics. Difficulty: Moderate Seeley - 008 Nervous... #29 Type: Comprehension 25. Four mounds, found in the roof of the midbrain, which are involved in integration of hearing and visual reflexes are a. the medullary pyramids. b. the reticular formation. c. the pons. D. the colliculi. e. both the medullary pyramids and the pons. Difficulty: Easy Seeley - 008 Nervous... #31 Type: Knowledge Category # of Questions Difficulty: Easy 13 Difficulty: Moderate 12 Seeley - 008 Nervous... 25 Type: Application 1 Type: Comprehension 2 Type: Knowledge 22