EXAM 4B Multiple Choice Questions 1.What are the functions of a neuron A)carryin
ID: 85178 • Letter: E
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EXAM 4B Multiple Choice Questions 1.What are the functions of a neuron A)carrying information to the brain sending out appropriate responses to appropriate location D) the above 2.What direction do the nerve impulses normally travel in an axon? B) away from the cell body Djaway from the A)toward the cell body C)in both directions 3.The junction between two neurons is called a 4. Cells that provide direct protection and physical support neurons are fluids. A) only located in the spinal fluid. found primarily C) myelinated. D) neuroglial cells E) nodes of Ranvier. 5. How is the nervous system able to respond to changes in the environment so quickly? environment. A) many sensory neurons that constantly evaluating the internal and means. It can integrate the information and interpret the actually C) The nervous system operates at a very fast pace. information received. D) It is able to generate an appropriate response to the sensory E) All of the above are correct. 6.The central nervous system is composed of A) the brain and spinal cord. brain B) the autonomic nervous system and the C) the somatic division and the autonomic division D) the sensory division and the motor division E) the somatic division and the motor division 7. The brain is protected by: B)membranes called meninges D)All of the choices are correct. A)cerebrospinal fluid 8. The left and right sides of the cerebrum are interconnected by the B) thalamus. A) corpus callosum. E) cerebral cortex. D) medulla oblongata. 9-12 Match the following neuroglial cells to their function: chmicroglia A) Scwann cells 9.Myelinate CNS axon and and provide structural structural support 10. Brain's immune cells, removes wastes and pathogens by phagocytosis 11 Maintain blood-brain barrier, regulate ion,nutrient and gas concentrations 12.Myelinate PNS axon and and participate in repair process after injury. in receiving cells are 13.Neurotransmitters that open Nat channels and trigger action potentials D) obligatory A) inhibitory B) cross-linked C excitatoryExplanation / Answer
1-D,a neuron performs all of the mentioned fuctions.
2-B,direction of nerve impulse is away from the Cell body.
3-C,the junction between two neurons is called a Synapse.
4-C,Myelinated cells provide direct support and protection to a Neuron.
5-E,all of the mentioned optons are Correct.
6-A,brain and spinal cord constitute the Central Nervous System.
7-D,all of the mentioned choices are Correct.
8-A,Corpus callosum connects left and right Cerebrum.
9- B , 10-C, 11-D ,12-A
13-C,Excitatory Neurotransmitters tigger action potential in adjacent neurons.
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