This quiz works best with JavaScript enabled. Home > Science > Biology > Nervous System – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 24 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... are star shaped. A) Satellite cells. B) Microglial cells. C) Astrocytes. D) Ependymal cells. Show Answer Correct Answer: C) Astrocytes. 2. Shape of spinal cord A) Cylindrical shape. B) Snake shape. C) Hair shape. D) Rectangular shape. Show Answer Correct Answer: A) Cylindrical shape. 3. What organ of the inner ear controls balance? A) Auditory Nerve. B) Cochlea. C) Ear Canal. D) Semicircular Canals. Show Answer Correct Answer: D) Semicircular Canals. 4. What do neurons lack that help them divide? A) Centrioles. B) Stimulus. C) Potholes. D) Fissures. Show Answer Correct Answer: A) Centrioles. 5. How many pairs of spinal nerves are there? A) 12. B) 13. C) 31. D) 21. Show Answer Correct Answer: C) 31. 6. What bone structure is affected by cervical spondylosis? A) Rib cage. B) Vertebrae. C) Cranium. D) Pelvis. Show Answer Correct Answer: B) Vertebrae. 7. ..... percent of the brain is fat and it is one of the fattest organ of the body. A) 70. B) 80. C) 60. D) 90. Show Answer Correct Answer: C) 60. 8. Why do doctors check reflexes? A) The check the spinal nerves in the peripheral nervous system. B) To check the action potential in neurons. C) To check the production of CSF in the ventricles. D) To check nerve memory. Show Answer Correct Answer: A) The check the spinal nerves in the peripheral nervous system. 9. In which form is a message transferred from one nerve to the another. A) Axon. B) Impulse. C) Dendrite. D) Message. Show Answer Correct Answer: B) Impulse. 10. What is the function of neuroglia (glia)? A) Support, insulate and protect neurons. B) Conduct nerve impulses. C) Digest food. D) Move skeletal bones. Show Answer Correct Answer: A) Support, insulate and protect neurons. 11. Nicotine can artificially stimulate receptor sites, making it an ..... A) Acetylcholine. B) Antagonist. C) Agonist. D) Axon. Show Answer Correct Answer: C) Agonist. 12. How does the muscular system depend on the nervous system? A) The nervous system transports blood to the muscles. B) The nervous system sends signals to the muscles to cause movement. C) The nervous system provides support for the muscles. D) The nervous system supplies food and oxygen to the muscles. Show Answer Correct Answer: B) The nervous system sends signals to the muscles to cause movement. 13. The brain is the ..... center of the entire nervous system. A) Speech. B) Motor. C) Control. D) Writing. Show Answer Correct Answer: C) Control. 14. This is the main part of the brain that controls logic, reasoning, intelligence. A) Cerebrum. B) Cerebellum. C) Brain stem. D) None of above. Show Answer Correct Answer: A) Cerebrum. 15. Where would you find cerumen? A) Eustachian tube. B) External auditory canal. C) Semicircular canals. D) Cochlea. Show Answer Correct Answer: B) External auditory canal. 16. The cells that support nervous tissue function and form about 90% of the substance of the brain are called A) Neuroglia. B) Schwann cells. C) Neurons. D) Fibroblasts. Show Answer Correct Answer: A) Neuroglia. 17. A clear, colorless liquid that fills and surrounds the brain and the spinal cord and provides a mechanical barrier against shock. A) Lymph. B) Ventricles. C) Meninges. D) Cerebrospinal Fluid. Show Answer Correct Answer: D) Cerebrospinal Fluid. 18. Which of the following can activate a protein by transferring a phosphate group to it? A) CAMP. B) G proteins. C) Phosphodiesterase. D) Protein kinase. Show Answer Correct Answer: D) Protein kinase. 19. Mechanical (sound) stimuli is sent to the brain as a nerve impulse along what structure? A) Nerve. B) Brain. C) Spinal cord. D) Vesicle. Show Answer Correct Answer: A) Nerve. 20. What is the name of the support cells in the CNS? A) Neurons. B) Axons. C) Dendrites. D) Neuroglia. Show Answer Correct Answer: D) Neuroglia. ← 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