ECGS Module 16B
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This document discusses several human senses including smell, taste, sight, touch, and hearing. It provides information on the anatomy and physiology associated with each sense, such as how smell is closely tied to taste and memory. It also describes experiments that can be done to test different senses, for example identifying scents to test smell or determining touch sensitivity. Diagrams of the nervous system and eye are included to illustrate the biological mechanisms underlying various senses.
ECGS Module 16B
- 1. Science is Organized Knowledge The Human Body Nervous System - Senses Exploring Creation with General ScienceExploring Creation with General Science
- 2. The Sense of Smell
- 3. • Smell is closely tied to: – TASTE – MEMORY
- 4. Test Your Smell Savvy Identifying Different Scents
- 5. The Sense of Taste Gustatory hair Stratified squamous epithelium of tongue (c) Enlarged view of a taste bud
- 6. Experiment 16.4 Smell and Taste
- 8. Experiment 16.2 Pupils Respond to Light
- 9. The Sense of Sight Nerve fibers from each half of each retina split and cross over in the optic chiasm.
- 10. Experiment 16.5 Blind Spot More Vision Experiments
- 12. Bovine Eye Dissection Sense of Sight Step by step instructions
- 13. The Sense of Touch • Touch – Texture – Sticky, rough, soft – Sensitive touch • Pain • Heat/cold • Itch • Pressure • Proprioception – position relative to body
- 15. Reflex Arc • Sometimes quick action is needed – No time to "think" about moving – CNS is bypassed, so reaction time quickened – Realization of pain reaches brain after movement occurs Animation
Editor's Notes
- #5: Fill several balloons with different spices, oils, and extracts. Include things like lemon juice, cinnamon, baby powder, and almond extract. Label them #1 – 10 and supply an answer key.
- #7: Module #16: The Human Nervous System EXPERIMENT 16.4 The Sense of Smell and the Sense of Taste Supplies : Toothpicks Apple Onion Blindfold A person to help you A knife Two paper towels Introduction - The sense of smell affects the sense of taste. This experiment will demonstrate that fact for most people. Procedure : Make sure that your helper is not in the room when you start this experiment. Cut a few bite-sized pieces from both the apple and the onion. Put the pieces on a paper towel and cover them with the other paper towel. Put away the rest of the apple and onion so that your helper has no idea what you have been cutting up. This is very important. Blindfold your helper and have your helper pinch his or her nose to make sure he or she cannot smell. Use the toothpick to spear one of the pieces and feed it to your helper. Ask him or her to identify the food by taste. Do not give him or her any hints. If he or she cannot identify the taste, don't worry about it. Do this with three more pieces of food so that your helper has had two onion pieces and two apple pieces. Each time, ask the helper to identify the food by taste. Now repeat steps (F) and (G), but this time allow your helper to stop pinching his or her nose. Let your helper smell the food before he or she tastes it. Once again, ask him or her to identify the food. Clean everything up.
- #8: Since at least 2006, the old “tongue map” theory has been dispelled by research in favor of the idea that ALL taste receptors are found in all areas of the tongue: http://www.nature.com/nature/journal/v444/n7117/full/nature05401.html#B78 There are very FEW taste buds in the center of your tongue.
- #9: Diagram copyright: https://www.nei.nih.gov/healthyeyes/eyeexam
- #14: Proprioception = position of the body part in relation to the rest of the body.