This quiz works best with JavaScript enabled. Home > Science > Nervous System – Quiz 675 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 675 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are neurotransmitters? A) The gates that let ions in and out of the axon. B) The molecules that carry an action potential across a synaptic cleft. C) Interneurons that communicate between sensory and motor neurons. D) None of above. Show Answer Correct Answer: B) The molecules that carry an action potential across a synaptic cleft. 2. The coloured part of the eye is called ..... A) Pupil. B) Iris. C) Cornea. D) Retina. Show Answer Correct Answer: B) Iris. 3. Lobe that controls hearing (sounds) A) Frontal. B) Occipital. C) Temporal. D) Parietal. Show Answer Correct Answer: C) Temporal. 4. Neurotransmitters are released from the ends of dendrites. A) True. B) False. Show Answer Correct Answer: B) False. 5. There over a million nerve cells in the human body. A) True. B) False. Show Answer Correct Answer: B) False. 6. These glial cells, found in the CNS, are responsible for forming and circulating cerebrospinal fluid. They have cilia on their surface to help move CSF A) Ependymal. B) Oligodendrocytes. C) Microglial. D) Astrocytes. Show Answer Correct Answer: A) Ependymal. 7. Repolarization results in efflux of: A) Na+ ions. B) K+ ions. C) Cl-ions. D) Both Na+ and K+ ions. Show Answer Correct Answer: B) K+ ions. 8. When nerve cells are not producing electrical responses, there is still a voltage difference across their membranes, termed the A) Channel gate bias. B) Electrolyte voltage. C) Equilibrium potential. D) Resting potential. E) Ion current. Show Answer Correct Answer: D) Resting potential. 9. Internal capsule A) Projection tract. B) Association tract. C) Commisural tract. D) None of above. Show Answer Correct Answer: A) Projection tract. 10. True or False:Sometimes our bodies can react faster than our brains A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 11. Which structure does NOT have a function in protecting the nervous system? A) Bone. B) Meninges. C) Myelin. D) Cerebrospinal Fluid. Show Answer Correct Answer: C) Myelin. 12. The elastic sponge-like organs are where gas exchange occurs. A) Lungs. B) Alveoli. C) Ravioli. D) Trachea. Show Answer Correct Answer: A) Lungs. 13. Which is an infection of the membranes that cover the brain and spinal cord? A) Multiple sclerosis. B) Parkinson's. C) Meningitis. D) Stroke. Show Answer Correct Answer: C) Meningitis. 14. The part of the brain responsible of balance and coordination is A) Brain stem. B) Cerebellum. C) Cerebrum. D) None of above. Show Answer Correct Answer: B) Cerebellum. 15. In how many parts our brain is divided? A) 5. B) 4. C) 3. D) Non of the above. Show Answer Correct Answer: C) 3. 16. The kind of neuron which processes (NOT detects) sensory information and selects a reaction A) Interneuron. B) Sensory neuron. C) Motor neuron. D) Visual neuron. Show Answer Correct Answer: A) Interneuron. 17. What is a cell in the nervous system? A) Neuron. B) Blood. C) Impulse. D) None of above. Show Answer Correct Answer: A) Neuron. 18. The portion of the brain in the back of the head between the cerebrum and the brain stem is the ..... Also known as "little brain." A) Medulla oblongata. B) Frontal lobe. C) Cerebellum. D) Pons. Show Answer Correct Answer: C) Cerebellum. 19. What are axons covered in? A) Myelin sheath. B) Capillaries. Show Answer Correct Answer: A) Myelin sheath. 20. Which term matches the following definition. Definition:The organ system that defends the body against infection. A) Nervous System. B) Homeostasis. C) Neurons. D) Immune System. Show Answer Correct Answer: D) Immune System. ← 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