This quiz works best with JavaScript enabled. Home > Science > Nervous System – Quiz 691 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 691 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Why is the speed of an impulse increased if a neurone is wrapped in myelin? A) Potassium ions flow out of the neurone faster. B) Myelin insulates the neurone so the temperature increases. C) The impulse can jump from node to node. D) It allows neurones to touch each other. Show Answer Correct Answer: C) The impulse can jump from node to node. 2. The part of the neuron that receives nerve impulses. A) Axon. B) Dendrite. C) Cell body. D) Axon terminus. Show Answer Correct Answer: B) Dendrite. 3. Portions of the brain that have been associated with primitive emotions such as fear include the hippocampus and amygdala. Together they form the major components of: A) The forebrain. B) Wernicke's area. C) The brain stem. D) The primary motor cortex. E) The limbic system. Show Answer Correct Answer: E) The limbic system. 4. The type of impulse conduction in myelinated fibers is called ..... A) Saltatory. B) Continuous. C) Synaptic. D) Myelinated. Show Answer Correct Answer: A) Saltatory. 5. The largest region of the brain is A) The cerebellum. B) The mid-brain. C) The basal ganglia. D) The cerebral hemisphere. Show Answer Correct Answer: D) The cerebral hemisphere. 6. An action potential will occur if threshold is reached, which is-55 to-60 mV. A) True. B) False. Show Answer Correct Answer: A) True. 7. The gap between neuron is called A) Synaptic cleft. B) Electrical impulse. C) Nervous gap. D) Neuron gap. Show Answer Correct Answer: A) Synaptic cleft. 8. The outer layer of the cerebrum and consists of gray matter A) Cerebral cortex. B) Ganglia. C) Nodes. D) Nerves. Show Answer Correct Answer: A) Cerebral cortex. 9. According to function a sensory neuron would A) Transmit impulses from brain and spinal cords to muscles and glands directing action. B) Carry Impulses from skin and organs to the spinal cord and brain about the external and internal environment. C) Transmit impulses between other neurons. D) None of above. Show Answer Correct Answer: B) Carry Impulses from skin and organs to the spinal cord and brain about the external and internal environment. 10. What type of glial cells support nerves in the central nervous system A) Astrocytes. B) Oligodendrocytes. C) Schwann cells. D) Neurons. Show Answer Correct Answer: B) Oligodendrocytes. 11. Central nervous system consists of A) Brain and spinal cord. B) Spine. C) Medulla. D) None of above. Show Answer Correct Answer: A) Brain and spinal cord. 12. Starting with cells, the fourth level of organization is ..... A) Tissues. B) Organ systems. C) Organs. D) Cells. Show Answer Correct Answer: B) Organ systems. 13. The four lobes of the brain make up the: A) Cerebellum. B) Diencephalon. C) Cerebrum. D) Brainstem. Show Answer Correct Answer: C) Cerebrum. 14. Eye condition is an infection of the eyelid and cornea, commonly called pink eye. A) Conjunctivitis. B) Myopia. C) Hyperopia. D) Color Blindness. Show Answer Correct Answer: A) Conjunctivitis. 15. What is sensory Nerve A) Carry messages from brain to muscles. B) Carry messages from muscle to brain. C) Carry messages from receptor to the brain. D) Carry messages from brain to sense organ. Show Answer Correct Answer: C) Carry messages from receptor to the brain. 16. The impulse of a neuron A) Changes in speed and strength based on the stimulus. B) Changes in frequency and strength based on the stimulus. C) Changes only in strength based on the stimulus. D) Changes only in frequency based on the stimulus. Show Answer Correct Answer: D) Changes only in frequency based on the stimulus. 17. The primary passageway of air A) Nose. B) Mouth. C) Heart. D) Abdomen. Show Answer Correct Answer: A) Nose. 18. Push my hand A) Pull my hand. B) Show of hands. C) Push my hand. D) None of above. Show Answer Correct Answer: C) Push my hand. 19. A(n) ..... diffuses across a narrow synaptic cleft between the presynaptic axon and the postsynaptic cell to transmit a nerve impulse. A) Neurotransmitter. B) Electrical impulse. C) Na+ ions. D) Vesicle. E) Action potential. Show Answer Correct Answer: A) Neurotransmitter. 20. Impulses going to your arms telling them to move travel along A) Sensory neurons. B) Motor neurons. C) Interneurons. D) Brain neurons. Show Answer Correct Answer: B) Motor neurons. ← PreviousNext →Related QuizzesNervous System Quiz 1Nervous System Quiz 2Nervous System Quiz 3Nervous System Quiz 4Nervous System Quiz 5Nervous System Quiz 6Nervous System Quiz 7Nervous System Quiz 8Nervous System Quiz 9Nervous System Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books