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How do muscles enlarge when undergoing athletic training

How do muscles enlarge when undergoing athletic training?

 

2) Fusion of embryonic ________ cells from the mesoderm creates multinucleated skeletal muscle fibers.

 

3) During contraction, the ________ shortens, and the ________ disappears completely.

 

4) Muscles in the appendages typically have their origins ________ to the insertion.

 

5) Typically, each skeletal muscle is supplied by one ________ and one ________.

 

6) Within a fascicle, every muscle fiber is surrounded by the ________.

 

7) The ________ filament is composed of myosin.

 

8) The mechanism for muscle contraction is the ________.

 

9) This protein adds to muscle elasticity.

10) ________ is a specialized smooth endoplasmic reticulum found in muscle fibers.

 

11) Muscle cells that produce ATP anaerobically via glycolysis are called ________.

 

12) Most muscles that are involved in maintaining posture contain high percentages of ________ fibers.

 

13) The difference in color between skeletal muscle fibers is caused by the abundance of ________.

 

14) During contraction, there is no change in the length of the ________ region of the sarcomere.

 

15) Muscle cells that produce ATP aerobically are called ________.

Dec 19 2019 View more View Less

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