This quiz works best with JavaScript enabled. Home > Science > Biology > Nervous System – Quiz 589 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 589 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The charge on a nerve cell membrane at rest that gives it the potential to react to a stimulus A) Resting potential. B) Action potential. C) Repolarization. D) None of above. Show Answer Correct Answer: A) Resting potential. 2. ..... is a short branched extension of a neuron that receives impulses from other neurons. (labeled #1) A) Axon. B) Dendrite. C) Cell body. D) Nucleus. Show Answer Correct Answer: B) Dendrite. 3. -opium A) Vision condition. B) Smell condition. C) Ear condition. D) Balance. Show Answer Correct Answer: A) Vision condition. 4. Which type of neuron might release acetylcholine to cause a skeletal muscle to contract? A) Sensory neuron. B) Motor neuron. C) Interneuron. D) External neuron. Show Answer Correct Answer: B) Motor neuron. 5. The nerve impulse must cross this to get from one neuron to the next. A) Conclusion. B) Pons. C) Electric gap. D) Myelin sheath. Show Answer Correct Answer: A) Conclusion. 6. CNS neuroglial cells that wrap around axons to create myelin A) Oligodendrocyte. B) Schwann. C) Satellite. D) Astrocyte. Show Answer Correct Answer: A) Oligodendrocyte. 7. A coiled, bony, fluid-filled tube in the inner ear; sound waves traveling through the cochlear fluid trigger nerve impulses A) Cochlea. B) Semicircular canals. C) Rods. D) Cones. E) Reflex. Show Answer Correct Answer: A) Cochlea. 8. The flap of skin that prevents food and water to enter the trachea. A) Vocal cords. B) Pharynx. C) Larynx. D) Epiglottis. Show Answer Correct Answer: D) Epiglottis. 9. Which of the following describes the function of ependymal cells? A) Create, secrete and circulate cerebrospinal fluid and help form the blood-brain barrier. B) Produce the myelin sheath in the CNS. C) Support and anchor neurons, stem cells, form blood-brain barrier. D) Immune defense against invading microorganisms. E) Produce the myelin sheath in the PNS. Show Answer Correct Answer: A) Create, secrete and circulate cerebrospinal fluid and help form the blood-brain barrier. 10. The ..... is the portion of the central nervous system that originates in the brain and extends down to the lower extremity of the trunk. A) Spinal cord. B) Brain. C) Reflex. D) Nerves. Show Answer Correct Answer: A) Spinal cord. 11. When a person looks at an image, light rays pass through the eye and focus on the: A) Pupil. B) Retina. C) Optic nerve. D) Lens. Show Answer Correct Answer: B) Retina. 12. What is the largest part of the brain called as A) Cerebellum. B) Cerebrum. Show Answer Correct Answer: B) Cerebrum. 13. Any injury on the ....., may result in serious problems, like incoordination or paralysis in any part of your body. A) Nerves. B) Brainstem. C) Spinal cord. D) Periphereal nervous system. Show Answer Correct Answer: C) Spinal cord. 14. Collections of dendrites in the peripheral nervous system are called ..... A) Ganglia. B) Tracts. C) Nerves. D) Nuclei. Show Answer Correct Answer: C) Nerves. 15. The "threshold" potential of a membrane A) Is the minimum hyperpolarization needed to prevent the occurrence of action potentials. B) Is the peak amount of depolarization seen in an action potential. C) Is the lowest frequency of action potentials a neuron can produce. D) Is the point of separation from a living from a dead neuron. E) Is the minimum depolarization needed to operate the voltage-gated sodium and potassium channels. Show Answer Correct Answer: E) Is the minimum depolarization needed to operate the voltage-gated sodium and potassium channels. 16. What is represented by D? A) Conclusion. B) Dendrite. C) Axon. D) Nucleus. Show Answer Correct Answer: A) Conclusion. 17. Cleaning your teeth:Is it? A) Voluntary. B) Reflex. Show Answer Correct Answer: A) Voluntary. 18. Which one of the following is not an interconnected function of the nervous system? A) Motor output. B) Sensory input. C) Sensory output. D) Sensory output. Show Answer Correct Answer: C) Sensory output. 19. Which is not a function of the sympathetic nervous system? A) Viscous saliva, unable to speak. B) Excited during the interview. C) The bladder relaxes. D) The stomach secretes gastric juice. Show Answer Correct Answer: D) The stomach secretes gastric juice. 20. Which part of the brain is responsible for voluntary, or conscious activities of the body? A) Cerebellum. B) Cerebrum. C) Brain stem. D) Spinal Cord. Show Answer Correct Answer: B) Cerebrum. ← PreviousNext →Related QuizzesScience 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books