When the muscle contracts, it gets shorter. When it relaxes, it gets longer.
Any thing which contracts should get shorter and thicker. So your muscle does.
it get shorter
i dont know, ask your mama :)
It's muscle fibers decrease.
The two muscle filaments are Myosin and Actin. Myosin is the thicker of the two. When a muscle contracts, a hook like particle extends off the myosin and grabs the actin pulling it in causing the contraction/ tension of the muscle
The two types of protein that are in your muscle cells are actin and myosin. What they do is they slide past each other and that makes a muscle cell work.
Actin and myosin
Actin Filaments
Myosin and Actin
actin and myosin are myofillaments that make up myofibrils (part of a muscle fibre) (so therefore : muscle is an actin or myosin containing structure
Actin and myosin interact in muscle cells.
Myosin and actin
The two filaments involved are myosin and actin. Actin: is the framework and slides over the myosin filament when the muscle is shortened. myosin: is a thick filament Also a sacromere: is made up of the actin and myosin. It is the functional unit of a muscle fibre and extends from z line to z line. A muscle contraction: is many sacromeres shortening ( actin sliding over myosin)
sarcomere
Actin and myosin are the molecules used for muscle contraction.
Actin and Myosin