This quiz works best with JavaScript enabled. Home > Science > Nervous System – Quiz 238 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 238 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This occurs when negative ions enter the neuron, making it less prone to firing an action potential. A) Hyperpolarization. B) Polarization. C) Depolarization. D) Repolarization. Show Answer Correct Answer: A) Hyperpolarization. 2. The bundle of thread-like fibers that extend from the brain stem to the lower part of the back A) Cerebellum. B) Cerebrum. C) Nerves. D) Spinal cord. Show Answer Correct Answer: D) Spinal cord. 3. A network of branches coming from individual cells. They act as receptors and receive information for the nervous system A) Axon. B) Axon terminal. C) Dendrite. D) Neuron. Show Answer Correct Answer: C) Dendrite. 4. During repolarization, what ions are moving out of the cell? A) Sodium. B) Potassium. C) Both Sodium and Potassium. D) Calcium. Show Answer Correct Answer: B) Potassium. 5. The ..... protects the brain from damage. A) Head. B) Skull. C) Heart. D) Eyes. Show Answer Correct Answer: B) Skull. 6. Connects the brain and spinal cord; located under the cerebellum; includes two regions known as the pons and the medulla oblongata. A) Brain stem. B) Cerebrospinal fluid. C) Cerebrum. D) Hypothalamus. Show Answer Correct Answer: A) Brain stem. 7. What is the English Meaning of the Medical Term Asthenia [ ASTHENIA ]? A) Positive deviation. B) Movement. C) Order, Condition. D) Weakness, Debility. E) Speech. Show Answer Correct Answer: D) Weakness, Debility. 8. These are the shallow grooves that separate the gyri. A) Fissures. B) Gyri (Gyrus). C) Sulci (Sulcus). D) Convolutions. Show Answer Correct Answer: C) Sulci (Sulcus). 9. Neurons that travel only from the brain to the body are called ..... A) Motor neurons. B) Inteneurons. C) Sensory neurons. D) None of above. Show Answer Correct Answer: A) Motor neurons. 10. The nerve root that enters the spinal cord dorsally controls: A) Motor. B) Sensory. C) They will bring it out. D) Spinal Tap. Show Answer Correct Answer: B) Sensory. 11. How fast can the brain send signals through the nerves? A) About 100 miles per hour. B) About 300 miles per hour. C) About 200 miles per hour. D) None of above. Show Answer Correct Answer: C) About 200 miles per hour. 12. During the resting state, where is there a greater concentration of sodium ions? A) Inside the neuron. B) Outside the neuron. Show Answer Correct Answer: B) Outside the neuron. 13. The ..... nervous system is made up of the brain and spinal cord. A) Central. B) Peripheral. C) Anterior. D) Posterior. Show Answer Correct Answer: A) Central. 14. Neurotransmitter chemical released at the ends of nerve cells A) Dendrite. B) Acetylcholine. C) Axon. D) Cerebellum. Show Answer Correct Answer: B) Acetylcholine. 15. Carol sets a brand new plant near the window. After several weeks, Carol realizes the flower is starting to tilt towards the sunlight. What would be considered the STIMULI in this scenario? A) Water. B) The dirt in the flower pot. C) The sunlight. D) The window. Show Answer Correct Answer: C) The sunlight. 16. What PROTECTS your brain? A) Rib cage. B) Skull. Show Answer Correct Answer: B) Skull. 17. Visceral sensory (afferent) fibers carry information from the A) Organs in the ventral body cavity to the CNS. B) Skin, skeletal muscles, and joints to the CNS. C) CNS to smooth muscles, cardiac muscles, and glands. D) CNS to skeletal muscles. Show Answer Correct Answer: A) Organs in the ventral body cavity to the CNS. 18. Nerve cells; highly specialized to transmit messages (nerve impulses) from one part of the body to another. A) Neurilemma. B) Axons. C) Pons. D) Neurons. Show Answer Correct Answer: D) Neurons. 19. The ..... controls respiration, blood pressure, and heartbeat. A) Medulla oblongata. B) Cerebrum. C) Cerebellum. D) Thalamus. Show Answer Correct Answer: A) Medulla oblongata. 20. What happens in the somatosensory cortex? A) Tasting. B) Feeling textures. C) Seeing. D) Hearing sounds. Show Answer Correct Answer: B) Feeling textures. ← 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