This quiz works best with JavaScript enabled. Home > Science > Biology > Nervous System – Quiz 298 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 298 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The transparent region on the anterior aspect of the eye through which light initially enters is the A) Cornea. B) Pupil. C) Iris. D) Retina. Show Answer Correct Answer: A) Cornea. 2. When the body temperature drop below normal ranges, arterioles in the skin will A) Dilate to allow less blood to flow to skin surface. B) Constrict to allow less blood to flow to skin surface. C) Dilate to allow more blood to flow to skin surface. D) Constrict to allow more blood to flow to skin surface. Show Answer Correct Answer: C) Dilate to allow more blood to flow to skin surface. 3. What pigment is responsible for giving skin color and protecting skin from UV rays? A) Collagen. B) Keratin. C) Sebum. D) Melanin. Show Answer Correct Answer: D) Melanin. 4. The ..... nerves carry stimuli to the brain. A) Motor. B) Sensory. C) Cranial. D) Peripheral. Show Answer Correct Answer: B) Sensory. 5. The dorsal root ganglion contains A) Cell bodies of sensory neurons. B) Cell bodies of motor neurons. C) Spinal nerves. D) Cranial nerves. Show Answer Correct Answer: A) Cell bodies of sensory neurons. 6. Is a bundle of nerve fibers (axons or dendrites) extending outside the CNS. Take impulses to or away from CNS. A) Nerves. B) Dendrite. C) Neuron. D) Glial Cells. Show Answer Correct Answer: A) Nerves. 7. Which of the following is not a way in which regular physical activity can benefit the body? A) Improving sleep quality. B) Reducing stress levels. C) Increasing risk of chronic disease. D) Enhancing mood and cognitive function. Show Answer Correct Answer: C) Increasing risk of chronic disease. 8. What lobe is in charge of problem solving? A) Parietal. B) Temporal. C) Frontal. D) Occipital. Show Answer Correct Answer: C) Frontal. 9. What are synaptic knobs? A) Fine threads that extend from the cell body into the axon to support it. B) The cone-shaped thickening found between the cell body and the axon. C) Fine extensions with specialized endings located at the end of an axon. D) The tips of the axon terminals, located close to the receptive surface of another cell. E) The small space between a neuron and another cell. Show Answer Correct Answer: D) The tips of the axon terminals, located close to the receptive surface of another cell. 10. Contains 3 structures:Midbrain, Pons, and Medulla Oblongata A) Diencephalon. B) Corpus Callosum. C) Meninges. D) Brain Stem. Show Answer Correct Answer: A) Diencephalon. 11. The ..... is the expanded tip of an axon containing vesicles full of neurotransmitter A) Synaptic knob. B) Motor end plate. C) Synaptic cleft. D) Resting membrane potential. Show Answer Correct Answer: A) Synaptic knob. 12. When a muscle is stimulated by an electrical impulse in a motor neurone it A) Moves. B) Relaxes. C) Contracts. D) Stays the same length. Show Answer Correct Answer: C) Contracts. 13. Which type of active channels in the plasma membrane open or close when they bind certain chemicals, such as neurotransmitters? A) Passive channels. B) Ligand gated channels. C) Mechanically gated channels. D) Voltage-gated channels. Show Answer Correct Answer: B) Ligand gated channels. 14. What happens in the cerebrum? A) Controls only involuntary movements. B) Connects your brain to the spinal cord. C) Where problem solving and thinking takes place. D) Carrie's signals by impulses to brain. Show Answer Correct Answer: C) Where problem solving and thinking takes place. 15. This is what the cerebellum is associated with having control of in your body. A) Body temperature, blood pressure and breathing. B) Breathing, heartbeat, and blood pressure. C) Visual processing. D) Coordination, posture, and balance. Show Answer Correct Answer: D) Coordination, posture, and balance. 16. What gives the brain messages? A) Nerves. B) Heart. C) Large intestine. D) None of above. Show Answer Correct Answer: A) Nerves. 17. Which of the following is a function of the nervous system? A) Controls all body actions. B) Regulate the body's growth. C) Protect all body organs. D) Transport of nutrients. Show Answer Correct Answer: A) Controls all body actions. 18. During an action potential, why is there a hyperpolarization phase? A) The sodium-potassium pump is active. B) Negatively charged chloride ions enter the cell to end the action potential. C) Voltage-gated sodium channels remain open. D) Voltage-gated potassium channels remain open. Show Answer Correct Answer: D) Voltage-gated potassium channels remain open. 19. QUESTION 9 A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 20. The nerve that provides movement of the eye is the ..... A) Optic. B) Facial. C) Abduct. D) Accessory. Show Answer Correct Answer: C) Abduct. ← 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