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What structures help to anchor the thick and thin filaments in place?
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∙ 12y ago
Z-discs and Titin.
Wiki User
∙ 12y ago
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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.
How is the H band distinguished from the other prominent structural features of the sarcomere?
It is a lighter region that contains thick filaments, but no thin filaments.
Are myosin filaments located in an A band?
Thick - it is the length of myosin.
This area contains overlapping thin and thick filaments?
H-Zone
What are two myofilaments that slide past one another to allow muscle cells to contract?
Actin and Myosin
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.
What is composed of myosin?
Thick Filaments
What makes up myofibrils?
Thin filaments consist primarily of the protein actin, coiled with nebulin filaments. Thick filaments consist primarily of the protein myosin, held in place by tit in filaments.
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.
Thick protein filaments within the A-bands?
Myosin. The A band has thick (myosin) and thin (actin) filaments.
The thick filaments of muscle fibers are composed of what?
Myosin
Myofibrils are composed primarily of two protein filaments called?
thick filaments and thin filaments
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.
Where is myosin found?
In thick filaments
What protein filament is usually always ready for muscle contraction?
The structure of muscle filaments - View diagram of the structure of muscle ... These two types of filament have different structures that enable then to work together. ... Thick filaments are formed from a protein called myosin which has important ...muscle filaments cause muscles to contract,
What is cross bridge cycling?
when the Thick filaments pull the thin filaments toward the center of the sarcomere
What makes up a myofibril?
Myofibrils are made up of actin (thin filaments) and myosin (thick filaments).
