Biology Practice: Nervous System (Mock Test 3 - Advanced)
1. Why is a nerve impulse described as an "Electro-chemical" event?
2. What is the functional significance of the "Sulci and Gyri" (folds) in the Cerebrum?
3. How does the arrangement of Gray and White matter differ between the Brain and the Spinal Cord?
4. Why do impulses travel faster in myelinated neurons compared to non-myelinated ones?
5. Which of the following best explains the role of the "Corpus Callosum"?
6. What is the "Reflex Arc" and its typical pathway?
7. Why are most of our vital "involuntary" centers located in the Medulla Oblongata?
8. What prevents a nerve impulse from traveling backward across a synapse?
9. How does the Cerebrospinal Fluid (CSF) protect the Central Nervous System?
10. In a "Mixed Nerve", what happens if only the motor fibers are damaged?
11. Why do we blink immediately when a bright light is flashed? (Mechanism)
12. What distinguishes "Conditioned Reflexes" from "Natural Reflexes"?
13. What is the role of "Dendrites" in maintaining the direction of an impulse?
14. If the Cerebellum of a person is damaged, what specific problem will they face?
15. Why is the Spinal Cord considered the "relay station"?
16. What chemical event occurs when an impulse reaches the axon bulb?
17. How does the Autonomic Nervous System (ANS) differ from the Somatic system?
18. The term "Stimulus" in biology refers to:
19. Why does the brain require a continuous supply of Oxygen and Glucose?
20. What would be the "Effector" in a reflex arc where you pull your hand away from a hot plate?
