Life Cycle - Human Biology (5B)
Lab 


PROBLEM: Can voluntary muscles "learn" to react faster?

PREDICTION:

MATERIALS: metersticks

PROCEDURE: One student will hold a meterstick vertically at shoulder height while another student attempts to catch it when it is released. Measure the distance that the meterstick dropped. (This is the distance between the holding and the catching hand). Do this 10 times, recording your reflex distance. Then, reverse the position with your partner.

trial number

1

2

3

4

5

6

7

8

9

10

your reflex distance

              

 

    

partner's reflex distance

                    

Graph your reflex distance compared to your partner's

d
i
s
t
a
n
c
e

c
m

 30                    
28                    
26                    
24                    
22                    
20                    
18                    
16                    
14                     
12                    
10                     
8                    
6                    
4                    
2                    
  1 2 3 4 5 6 7 8 9 10

trial number

CONCLUSION: What happened with each successive trial?


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