Laboratory Review 17 1. Is the sciatic nerve part of the central nervous system
ID: 255559 • Letter: L
Question
Laboratory Review 17 1. Is the sciatic nerve part of the central nervous system or the peripheral nervous system? 2. What part of the brain is divided into right and left hemispheres? 3. What portion of the brain looks like a tree in cross section? 4. What is the most posterior portion of the brain stem? 5. What cerebral lobe is associated with the sense of vision? 6What structures protect the spinal cord? 7. What makes the white matter of the spinal oord appear white? 8. What type of neuron is found completely within the central nervous system? 9. What type of neuron is responsible for transmitting nerve impalses from the spinal cord to an effector? 10. What part of the eye refracts and focuses light rays? 11. What part of the ear contains the sensory receptors for hearing? 12. What is the anatomical name for the eardrum that picks up sound waves? 13. What layer of the skin contains Meissner and Pacinian corpuscles? 14. What are the names of the chemoreceptors that respond to molecules in air and water? Thought Questions 15. Explain why people who develop cataracts (cloudy eye lenses) require surgery to implant new lenses. l6. When you stared at the dark cross with your left eye, why did the dark cirele "disappear" from view as you moved the illustration toward you? 17. In a drag race, drivers must wait until the green light is illuminated before they can move their vehicle. Explain why a time delay exists, based on the information presented in this exercise. Laboratory 17 Nervoin Svstem aodExplanation / Answer
1) Central nervous system is consists of brain & spinal chord & is responsible for the most of the functions of the body & mind. Where as peripheral nervous system is consists of all the nerves that are outside of the central nervous system,i.e., brain & spinal chord & serves as a connector between the central nervous system & the limbs & organs of the body. Sciatic nerve, which is part of the peripheral nervous system is the largest single nerve in the body & run through the buttock to the back of the thigh.
2) Cerebrum is the largest part of the brain that is divided into right & left hemispheres. The right hemisphere is responsible for controlling the left side of the body & vice versa. Right hemisphere is responsible for art & creativity, where as left hemispheres is responsible for logical & analytical thought.
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