https://padlet.com/katelyn_starr/ncooned4dr2r Made by Tom Cruise en-us 2018-03-22 15:06:30 UTC 2018-03-23 15:24:59 UTC hello@padlet.com katelyn_starr https://padlet.com/katelyn_starr/ncooned4dr2r/wish/245516546 Three functions of the muscular system are to pump blood, breathe, and to protect internal organs. There are more than 600 muscles in the human body. The three types of muscles are the smooth, skeletal, and the cardiac muscle. An example of a cardiac muscle is the heart. An example of the skeletal muscle is your Bicep, and an example of a smooth muscle is your esophagus. Voluntary muscles are muscles you can control, and Involuntary muscles are muscles you cannot control. While doing the muscle fatigue activities I learned that muscle fatigue is caused by a buildup of lactic acid in your muscles. I also learned that muscle fibers are constantly switching on and off. Lactic acid was building up in our muscles causing muscle fatigue. ]]> 2018-03-23 15:20:47 UTC https://padlet.com/katelyn_starr/ncooned4dr2r/wish/245516546