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Touch Objective:To see how the touch receptors on your fingers contribute rapidly distinguish one shape among many. To demonstrate that the undress on contrary parts of the body use up different number of receptors. Materials:Cloth pop with 20 items of differing sizes, shapes and textures. slightly of the items can mystify the same texture but different sizes (marbles, beads). Construct a replica set of nine of the objects. quaternion corks stuck with ii toothpicks 3mm, 10mm, 25mm, and 35mm apart. fall in IDistinguishing shape and texture surgical operation:The follow volition have nine items set pop out on the table in await of you. Take the bag containing the 20 items (including a duplicate of the nine before you). IN ORDER of the items in front of you, pull the duplicates out of the bag. The proctor will time you. enter your time present and canvass with other students. _______________________________________________ Part II Comparing n umbers of receptors on skin on fingertips, tail of hand , and forearm. Procedure: gift on your blindfold. The proctor will touch your forearm, back of hand, and fingertips with for each one of the four corks. At each touch, tell the proctor whether you witness one or two pressure points.

Record your answers here: 3mm 10mm 20mm35mm Forearm ________________________________________________ Back of perish_________________________________________________ Fingertip________________________________________________ What part of the body parts well-tried is most culture mediu m? The receptors in our skin ar NOT distrib! uted in a uniform way around our bodies. Some places, such(prenominal) as our fingers and lips, have more than touch receptors than other parts of our body, such as our backs. Thats one reason why we are more sensitive to touch on our fingers and instance than on our backs. commit Threshold Distance Fingers 2-3 mm top(prenominal) Lip 5 mm Cheek 6 mm Nose 7 mm Palm 10 mm Forehead 15 mm Foot 20 mm...If you hope to get a full essay, order it on our website: OrderCustomPaper.com

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