Inductive Lab: Sensory Inductive Lab: Sensory NervesNerves

Objective: Determine that the sensory nerve endings have different distribution in the body.

MaterialsMaterials Ruler, Paper Clips, Blindfold

1)Prepare the paper clips by bending it to form a U-shaped (from no separation to increments of 2mm all the way to 10mm.)2 ) Blindfold one partner and mark with one spot in your

partner’s arm.

3 ) Lightly touch the ends of the paper clips (make sure to use the paper clips in random order) on the marked spot.

4) Ask your partner, “Do you feel two ends touching you?” Record their response (Yes or No).

5) Perform 3 trials (each trial means using all 6 paperclips in random)

6 ) After finished with arm, do the same steps for your partners fingertips, leg.

Data Table: Data Table: Question: “Do you feel two ends of the paper clip?” Question: “Do you feel two ends of the paper clip?”

Answer: Yes or NoAnswer: Yes or No

Increments (mm)

Arm Finger tips Leg

Trial 1

Trial 2

Trial 3

Trial 1

Trial 2

Trial 3

Trial 1

Trial 2

Trial 3

0 mm No No No No No No No No No

2 mm No No No No No Yes No No No

4 mm No No No Yes Yes Yes No No No

6 mm Yes Yes No No Yes No No Yes No

8 mm Yes Yes Yes Yes No No Yes Yes Yes

10 mm No Yes Yes Yes Yes Yes No No Yes

>10mm

No No Yes No Yes No Yes Yes No

Min. Distance

6 6 8 4 4 2 8 6 8

Average

6.67 mm 3.33 mm 7.33 mm

Class DataClass Data

Body Part

Group Data (mm)

1 2 3 4 5 6 7 8 9 10 ClassAvera

ge

Arm 6.7 4.8 5.2 6.1 6.3 6.7 5.9 5.8 6.2 6.0 5.9

Finger Tips

3.3 3.9 4.0 2.8 2.9 3.1 3.5 4.2 2.9 3.4 3.4

Leg 7.3 7.9 8.3 6.5 6.8 7.5 7.1 4.9 6.9 7.4 7.1