This quiz works best with JavaScript enabled. Home > Science > Biology > Nervous System – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 2 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Fred got a concussion and has lost his ability to balance on one leg. The nerve most likely affected is ..... A) Vagus. B) Vestibulocochlear. C) Olfactory. D) Hypoglossal. Show Answer Correct Answer: B) Vestibulocochlear. 2. What is the function of microglia? A) To produce and regulate cerebrospinal fluid. B) Producing myelin. C) Anchoring neurons in place and providing them with nutrients. D) Protecting neurons from infection. E) Regulating the microenvironment of cell bodies. Show Answer Correct Answer: D) Protecting neurons from infection. 3. The protective coverings of the brain and spinal cord are called the A) Neurolemmas. B) Meninges. C) Myelin Sheaths. D) Ependymas. Show Answer Correct Answer: B) Meninges. 4. 85% of the brain is made up of the ..... ? A) Cerebrum. B) Cerebellum. C) The brain. D) None of above. Show Answer Correct Answer: A) Cerebrum. 5. Largest and highest part of the brainoccupies whole upper part of the craniumweighes about 2 lbsdivided into 2 hemispheres A) Thalamus. B) Cerebrum. C) Diencephalon. D) Hypothalamus. Show Answer Correct Answer: B) Cerebrum. 6. The elevated ridges of tissue on the surface of the cerebral hemispheres are known as ..... while the shallow grooves are termed ..... A) Sulci; gyri. B) Gyri; sulci. C) Ganglia; gyri. D) Tracts; ganglia. E) Receptors; effectors. Show Answer Correct Answer: B) Gyri; sulci. 7. Which is controlled by conscious thought? A) Voluntary actions. B) Breathing. C) Heart rate. D) Digestion. Show Answer Correct Answer: A) Voluntary actions. 8. Disorder that affects movement and muscle tone; caused by a defect in, or trauma to, the brain before birth A) Cerebral palsy. B) Ischemic stroke. C) Bell's palsy. D) Subdural hematoma. Show Answer Correct Answer: A) Cerebral palsy. 9. The CNS contains the: A) Brain and hands. B) Brain and nerves. C) Brain and spinal cord. D) Brain and heart. Show Answer Correct Answer: C) Brain and spinal cord. 10. Results from opening of gated Na channels A) Polarized. B) Depolarized. C) Hyperpolarized. D) None of above. Show Answer Correct Answer: B) Depolarized. 11. Trevor is watching a house be built across the street. There are many things that are going into this house, including a security system. A camera is mounted on the outside of the house and then long cords connect the camera to a computer inside. What are the long cords like? A) Central nervous system. B) Peripheral nervous system. C) Neuron. D) Sensory neuron. Show Answer Correct Answer: B) Peripheral nervous system. 12. Condition in which a defect results in light rays focusing in front of the retina rather than directly on it;causes distant images to appear blurry; nearsightedness A) Hyperopia. B) Myopia. C) Tinnitus. D) Neuropathy. Show Answer Correct Answer: B) Myopia. 13. This component determines the client's ability to focus on a mental task that is expected to be able to be performed by individuals of normal intelligence. A) Orientation. B) Language. C) Memory. D) Attention Span and Calculation. Show Answer Correct Answer: D) Attention Span and Calculation. 14. Which of the following would be most active in a bright environment? A) Cones; pupils wide open. B) Cones; pupils constricted. C) Rods; pupils wide open. D) Rods; pupils constricted. Show Answer Correct Answer: B) Cones; pupils constricted. 15. Long-term memories may improve when A) Axons eliminate the myelin sheath. B) Reactions decrease within cell bodies. C) Impulses reverse direction. D) Dendrites grow or become enlarged. Show Answer Correct Answer: D) Dendrites grow or become enlarged. 16. When many organ systems work together it can form ..... A) Organ. B) Cells. C) Organ system. D) Organism. Show Answer Correct Answer: D) Organism. 17. When Laci sees Trey, her heart starts beating fast, her cheeks blush, and she gets butterflies in her stomach. This response was triggered by which division of her nervous system? A) Sympathetic. B) Parasympathetic. C) Somatic. D) Afferent. E) Peripheral. Show Answer Correct Answer: A) Sympathetic. 18. They are points on a nerve cell that receive information (signals) from other nerve cells. "Tree branches." A) Motor neuron. B) Dendrite. C) Axon. D) Conclusion. E) Neurochemical. Show Answer Correct Answer: B) Dendrite. 19. If you touch something hot and pull your hand away, what tells your hand to pull away? A) Motor neurons. B) Sensory neurons. C) Pain neurons. D) Impulse neurons. Show Answer Correct Answer: B) Sensory neurons. 20. When does your brain stop making connections A) 18-21. B) 16-17. C) 23-25. D) 30 +. Show Answer Correct Answer: C) 23-25. ← PreviousNext →Related QuizzesScience QuizzesNervous System Quiz 1Nervous 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