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Question Description
In this lab, you will investigate the behavior of the human nervous system and make observations of the special senses.
Activity 1: Touch Receptors (worth 10 points total)
List four sensations detected by the tactile receptors in the skin(1)
(2)
(3)
(4)
Get a volunteer to touch each of these locations on your body using the same pressure. Close your eyes and rank how sensitive each area is from 1 (low sensitivity) to 5 (high sensitivity). Put your rankings in the chart.Touch Receptors
Location
Rank the concentration of receptors (Low:1-High:5)
Fingertip
Heel of hand
Forearm
Elbow
Back of neck
Answer this question:
What can you conclude about the density of touch receptors in your skin?
Activity 2: Vision (worth 15 points total)
Label the parts of the eye in the picture. The choices are optic nerve, cornea, iris, pupil, lens, and retina.(1)
(2)
(3)
(4)
(5)
(6)
eye diagram
Test the age of your eyes.
Hold a pencil or ballpoint pen vertically at arm's length.
Close your left eye and focus on the tip.
Quickly bring the pencil closer to your eye until it is out of focus.
Have your partner measure the distance between your eye and the pencil.
Repeat for both eyes.
Try it with and without glasses (if you wear glasses).
Age of your Eyes
Cm 9 10 13 18 50 83
Age 10 20 30 40 50 60
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