Your Name:___________________________________________ Names of students in lab group:______________________________________________ ____________________________________________________ Period_______ UNDERSTANDING HUMAN SENSORY SYSTEM: Somatic and Special Senses LAB RESULTS AND ANALYSIS SOMATIC EXPLORATIONS A. Sensory Adaptation 1. Type of receptor(s) explored? 2. Discuss the results observed: 3. Explain why the results occurred: B. Temperature Mapping 1. Type of receptor(s) explored? Results: 2. Number of heat receptors for individual tested = __________________/cm2 3. Number of cold receptors for individual tested = __________________/cm2 Questions: 4. Use your calculations to support whether the individual tested is more sensitive to hot or cold temperatures. 5. Compare the concentration of thermoreceptors with other teams. Explain any variation. C. Distribution and Sensitivity of Touch receptors 1. Type of receptor(s) explored? Results: 2. Complete a chart for all individuals tested. Question 3. Which skin area is most sensitive? Support your answer with quantitative data. SPECIAL SENSES EXPLORATIONS D. TASTE 1. Type of receptor(s) explored? 2. Label the tastes associated with the areas on the tongue. Draw and label a tongue diagram below. Questions: 3. Do taste receptors vary from person to person? Explain why it does or does not vary. 4. Does the tongue possess pain receptors associated with taste? Support your answer with a focus on taste. E. VISION 1. Type of receptors being explored? Results of vision tests: Part A – Visual Acuity Values Part B – Astigmatism Results Part C – Accomodation Measurement (cm) RIGHT EYE LEFT EYE Test subject 1 – Test subject 1 – Test subject 2 – Test subject 2 – Test subject 3 – Test subject 3 – Test subject 4 – Test subject 4 – Test subject 1 – Test subject 1 – Test subject 2 – Test subject 2 – Test subject 3 – Test subject 3 – Test subject 4 – Test subject 4 – Test subject 1 - Rt ____ Left____ Explain the eye physiology that causes accommodation. Test subject 2 - Rt ____ Left____ Test subject 3 - Rt ____ Left____ Test subject 4 - Rt ____ Left____ Part D – Blind Spot Measurement (cm) Test subject 1 - Rt ____ Left____ Test subject 2 - Rt ____ Left____ Test subject 3 - Rt ____ Left____ Test subject 4 - Rt ____ Left____ Explain the eye physiology that causes the blind spot and why this is a concern for driving. Part E - Afterimage Red’s afterimage = Explain the physiology of what causes an afterimage. Blue’s after image = Green’s after image = Yellow’s after image = Part F- colorblindness Males: Percent Color Blind Females: Percent Color Blind Red-green= Protanopia= Deuteranopia = Red-green= Protanopia= Deuteranopia = Questions 1. A person has 20/80 vision in both eyes. Is this person far-sighted or near-sighted? 2. What is meant by 20/70 vision? 3. What is meant by 20/10 vision? 4. Why does the near point accommodation often increase with age? 5. Explain the physiology of color-blindness. What is the physiological defect? F. HEARING 1. Type of receptors being explored? 2. Which student had the best auditory acuity and which student had the worst? Support answer with quantitative data. 3. For the sound localization test, were there any discrepancies between actual location of sound and reported location? 4. What is the possible physiological problem when the Rinne test indicates impairment? 5. What is the possible physiological problem when the Weber test indicates impairment? CUMULATIVE SENSORY INPUT: Reaction Time Results: 1. Complete a data table comparing the reaction times for all individuals in your group. Be sure to include data for “with warning” and “without warning” Indicate distance average (cm) for 5 trials, and show calculations used to determine reaction time (sec). 2. Make a bar graph comparing the average reaction times of the individuals in your group. Questions 3. Obviously reaction time is important when driving. Debate as a group which is more of a distraction to a person driving: the driver talking on a cell phone or the driver texting on a cell phone. Explain your answer using physiological detail. 4. Go to http://www.bbc.co.uk/science/humanbody/sleep/sheep/reaction_version5.swf and record the average reaction time for 3 trials. Show work.