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Are there more thick filaments than thin filaments in smooth muscle?

There more thin filaments than thick filaments in smooth muscle. The ratio is of the thin to thick filaments in the smooth muscle is approximately 15:1.


What structures anchor thin filaments?

I believe the Z-lines anchor the Thin filaments


Myofibrils are composed primarily of two protein filaments called?

thick filaments and thin filaments


What are the roles of thick and thin filaments in muscle contraction?

The thin filaments are actin, and the thick filaments are myosin. The filaments run parrel to one another along the length of the sarcomere.The dark bands that occur in the middle of the sarcomere are regions where the thick filaments and thin filaments overlap.


Thin filaments at either end of the sarcomere are attached to interconnecting filaments that make up the what?

The thin filaments at either end of the sarcomere are attached to interconnecting filaments called Z-lines or Z-discs. These structures help anchor and align the thin filaments during muscle contraction.


Which of the following become connected by myosin cross-bridges during muscle contraction A) thin filaments and thick filaments B) thin filaments and t-tubules C) thick filaments and titin filame?

Interactions between actin and myosin filaments of the sarcomere are responsible for muscle contractions. The I bands contain only thin (actin) filaments, whereas the A bands contain thick (myosin) filaments.


The thick filaments of muscle fibers are composed of what?

Myosin


What is H zone?

Thin filaments


Why do bony fish have many gill filaments?

Bony fish have many gill filaments because they use them to breathe. They are also used to transfer things like water and ions.


What are the 3 different types of myofilaments?

The three different types of myofilaments are thick filaments, thin filaments, and elastic filaments. Thick filaments are composed of myosin protein, thin filaments are primarily made of actin protein, and elastic filaments (also known as titin) provide elasticity and stability to the sarcomere.


What muscle cell filaments come closer together when the sarcomere shortens?

thin filaments


What is the h-zone missing?

Thin filaments