0
Thick - it is the length of myosin.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Where are the myosin filaments found?
Myosin and Actin are contractile proteins that make up the sarcomeres, the contractile components of myofibrils, which make up skeletal and cardiac muscle.
Where are actin filaments only located?
in the A band
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.
What are two myofilaments that slide past one another to allow muscle cells to contract?
Actin and Myosin
Does Tropomyosin molecules move and expose specific sites on myosin filaments?
true
Thick protein filaments within the A-bands?
Myosin. The A band has thick (myosin) and thin (actin) filaments.
What protein makes up the thick filaments of myofibrils?
Myosin makes up the THICK filaments, and actin makes up the thin filaments of myofibrils.
The thick filaments of muscle fibers are composed of what?
Myosin
Why does band stay the same length when the sarcomere shortens?
the A band stays the same length because it is the length of the myosin filaments, and all the myosin does it sit there while actin slides past it.
What are the names of protein filaments in a muscle fiber?
Actin Filaments
What is composed of myosin?
Thick Filaments
Where are the myosin filaments found?
Myosin and Actin are contractile proteins that make up the sarcomeres, the contractile components of myofibrils, which make up skeletal and cardiac muscle.
Striations in striated muscle result from?
Striated muscle appears stripped due to the parallel alignment of many muscle fibers side to side with their sarcomeres lined up. The striations across each cell are caused by the overlap of the contractile proteins actin and myosin. Actin is the main protein of thin filaments and myosin is in the thick filaments. When actin and myosin are overlapped the darkest band appears( A band), when only actin is present a lighter band, is seen (I band).
Where is myosin found?
In thick filaments
What are actin and myosin and are they organized iin a muscle?
Thick filaments are made of the protein myosin and thin filaments are made of the protein actin. Myosin and actin filaments are arranged to form and overlapping pattern which gives muscle tissue its striated appearance.
Where are actin filaments only located?
in the A band
Do myosin filaments outnumber actin filaments in skeletal muscles?
No. 2 to active
