This quiz works best with JavaScript enabled. Home > Science > Biology > Nervous System – Quiz 151 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 151 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. High frequency causes ..... pitch A) High. B) Low. Show Answer Correct Answer: A) High. 2. The smallest functional unit of a muscle fiber is the ..... A) 1.sarcomere. B) 1.myofibril. C) 1.fascicle. D) 1.myofilament. Show Answer Correct Answer: A) 1.sarcomere. 3. What is the purpose of synapses? A) To stop two neurons from touching each other. B) To allow two neurons to interact with each other. C) To ensure nerve impulses travel in one direction. D) To stop neurons from communicating with each other. Show Answer Correct Answer: C) To ensure nerve impulses travel in one direction. 4. The following are true of CSF except which one? A) Is produced by the choroid plexuses. B) Transports glucose and other brain nutrients. C) Flows under high pressure. D) Found in all ventricles. Show Answer Correct Answer: C) Flows under high pressure. 5. Receptors for smell are called A) Olfactory receptors. B) Glossopharyngeal. C) Taste buds. D) Eustachian tube. Show Answer Correct Answer: A) Olfactory receptors. 6. Small, oval neuroglial cells with spider-like process which carry out phagocytosis are called: A) Microglia. B) Astrocytes. C) Satellite cells. D) Ependymal cells. Show Answer Correct Answer: A) Microglia. 7. Cells that do not conduct information but support the function of neurons A) Glial Cells. B) Neurons. Show Answer Correct Answer: A) Glial Cells. 8. ..... are nerve endings that send signals to the nervous system when stimulated. A) Cells. B) Sensory receptors. C) Organ systems. D) Brain. Show Answer Correct Answer: B) Sensory receptors. 9. The system which controls and coordinates all the activities of our body is called the A) Skeletal system. B) Circulatory system. C) Nervous system. D) None of above. Show Answer Correct Answer: C) Nervous system. 10. If someone is breaking into your house, this division of your nervous system might be activated: A) Parasympathetic division. B) Sympathetic division. C) Fight or flight response. D) Both b and c. E) All of the above. Show Answer Correct Answer: B) Sympathetic division. 11. Parkinson's Disease results from the bodies inability to produce what? A) Sugars. B) Rods or Cones. C) White Blood Cells. D) Neurotransmitters. Show Answer Correct Answer: D) Neurotransmitters. 12. Explain the process of action potential in a neuron. A) Action potential is initiated by a depolarization of the neuron's membrane, which causes voltage-gated ion channels to open and allow the influx of sodium ions. B) Action potential is a result of the neuron's membrane becoming hyperpolarized. C) Action potential is caused by the repolarization of the neuron's membrane. D) Action potential is initiated by the influx of potassium ions. Show Answer Correct Answer: A) Action potential is initiated by a depolarization of the neuron's membrane, which causes voltage-gated ion channels to open and allow the influx of sodium ions. 13. The autonomic nervous system consists of A) Single motor neuron bodies originating in the CNS and extending to muscles. B) Chain of two motor neurons, one originating in the CNS and one extending to the effector organ. Show Answer Correct Answer: B) Chain of two motor neurons, one originating in the CNS and one extending to the effector organ. 14. What does oxygen do for our bodies? A) Helps us move. B) Helps us remove waste from our body. C) Helps turn food into energy. D) None of above. Show Answer Correct Answer: C) Helps turn food into energy. 15. Somatic system controls A) Voluntary movement. B) Involuntary movement. Show Answer Correct Answer: A) Voluntary movement. 16. The flow of electricity/impulses/messages from one point to another: A) Voltage. B) Proteins. C) Potassium. D) Current. E) Depolarization. Show Answer Correct Answer: D) Current. 17. It is estimated that around 86 ..... neurons are in our brains, and more than 100 ..... are in our brains at the time of birth. A) Hundred, hundred. B) Million, million. C) Gazillion, gazillion. D) Billion, billion. Show Answer Correct Answer: D) Billion, billion. 18. What is the part of the brain that controls balance, coordination, and unconscious muscle activities A) Cerebrum. B) Cerebellum. C) Brain stem. D) Neurons. Show Answer Correct Answer: B) Cerebellum. 19. When we scoop rice into our mouths and chew it What is the stimulus that makes us chew rice? A) Hunger. B) Saliva. C) Rice in mouth. D) Grilled chicken in a plate. Show Answer Correct Answer: C) Rice in mouth. 20. BONUS:What color is your brain? A) Red. B) Light pink. C) Grey. D) None of above. Show Answer Correct Answer: C) Grey. ← 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