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.