Muscle function lab

This is the lab where I am going to find out how the muscles work while doing different types of activities.

# of fists normal

24



# of fists ice water

17



squeezing a ball for 20 seconds

1. 32

2. 32

3. 30

4. 28

5. 24

6. 25

7. 24

8. 22

9. 24

10. 22

The following is deminstrating what happens when muscles contract under various circumstances.



1. The three things the muscle did was it got harder, it got shorter as it contracted, and it got bigger as it contracted.



2. When I put my hand in ice water and then made fists it made it harder because my muscles were cold and they had to warm up again. So I didn't do as many as before.



3. After doing 10 repititions the muscles started to get tired and I tried to force myself to keep the reps up there.



As the muscles contract it is releasing impulses to the brain telling it what is going to happen which then allows the filaments to contract as needed.