This quiz works best with JavaScript enabled. Home > Science > Nervous System – Quiz 372 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nervous System Quiz 372 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Why reflex actions are important in the body? A) To protect the body from damage. B) To keep the muscles healthy. C) To keep the body warm. D) None of above. Show Answer Correct Answer: A) To protect the body from damage. 2. Which statement is correct when looking at bright light or looking at nearby objects? A) The pupil narrows, the ciliary muscles relax, and the lens collapses and elongates. B) The pupil narrows. Ciliary muscles relax. The lens becomes clear and round. C) The pupil narrows. Ciliary muscles shrink. The lens becomes clear and round. D) The pupil narrows, the ciliary muscle shrinks, the lens collapses and elongates. Show Answer Correct Answer: C) The pupil narrows. Ciliary muscles shrink. The lens becomes clear and round. 3. Which part of the brain controls muscles and balance? A) Cerebellum. B) Cerebrum. C) Brain stem. D) None of above. Show Answer Correct Answer: A) Cerebellum. 4. What are the smallest parts of living organisms? A) Cells. B) Tissues. C) Organs. D) Systems. Show Answer Correct Answer: A) Cells. 5. Which layer is a blood vessel-rich layer with a dark brown membrane? A) Choroid. B) Sclera. C) Retina. D) Cornea. Show Answer Correct Answer: A) Choroid. 6. The Spinal nerves arise from spinal cord and they are ..... A) 31. B) 12pairs. C) 12. D) 31Pirs. Show Answer Correct Answer: D) 31Pirs. 7. Branch-like; receives impulses A) Impulse. B) Neuron. C) Nerve. D) Dendrites. Show Answer Correct Answer: D) Dendrites. 8. -al A) Water. B) Mind. C) Pertaining to. D) Abnormal condition. Show Answer Correct Answer: C) Pertaining to. 9. The color of visible light is determined by the ..... A) Frequency. B) Prism. C) Wavelength. D) Transparency. Show Answer Correct Answer: C) Wavelength. 10. Which of the following is classified as the fore brain? A) Olfactory region, Hypothalamus, Optic region. B) Cerebrum, Olfactory region, Optic region. C) Cerebrum, Cerebellum, Olfactory region. D) Cerebrum, Olfactory region, Hypothalamus. Show Answer Correct Answer: D) Cerebrum, Olfactory region, Hypothalamus. 11. A control system that uses information from sensors to increase the rate of processes. A) Positive Feedback Mechanism. B) Negative Feedback Mechanism. Show Answer Correct Answer: A) Positive Feedback Mechanism. 12. How many properties are shown by nerve cells:-contractibility-conductivity-extensibility-elasticity-all or none A) 2. B) 3. C) 4. D) 5. Show Answer Correct Answer: A) 2. 13. Controls voluntary movement, reasoning, memory, planning A) Frontal. B) Parietal. C) Occipital. D) Temporal. Show Answer Correct Answer: A) Frontal. 14. Neural impulses, also called ....., carry electrical signals through the axon. A) Neurotransmitters. B) Action potential. C) Norepinephrine. D) None of above. Show Answer Correct Answer: B) Action potential. 15. Which structure of the brain, responsible for intelligence, language, memory, and consciousness, forms the outer 'wrinkled' layer of the brain? A) Cerebral cortex. B) Cerebellum. C) Medulla. D) Thalamus. Show Answer Correct Answer: A) Cerebral cortex. 16. At resting membrane potential, neurons have more (a) on the outside of the cell membrane. A) And Na+. B) K+. C) NaCl. D) Cl-. Show Answer Correct Answer: A) And Na+. 17. The membrane that surrounds an entire nerve is the: A) Perineurium. B) Epineurium. C) Endoneurium. D) Neurilemma. Show Answer Correct Answer: B) Epineurium. 18. Which nervous system inhibits digestion? A) Sympathetic Nervous System. B) Parasympathetic Nervous System. Show Answer Correct Answer: A) Sympathetic Nervous System. 19. The right and left sides of the brain are connected by the A) Sulcus. B) Gyri. C) Corporal callosum. D) Callous body. Show Answer Correct Answer: D) Callous body. 20. Have you had any headaches A) Ever had vision change. B) Never had a stomach ache. C) Never had a headache. D) None of above. Show Answer Correct Answer: C) Never had a headache. ← 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