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Q: What molecule is connected to the z line of the sarcomere?
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What molecule is connected to the Z line?

titin


End of a sarcomere is marked by?

z disc


In skeletal muscle where is the z-line?

Actin molecules are bound to the Z line, which forms the borders of the sarcomere. Other bands appear when the sarcomere is relaxed. The Z line is found between two sarcomeres.


The segment of a myofibril that is called a sarcomere runs from?

One Z line to the next Z line


Sarcomere think filaments are linked laterally by proteins of the?

z line


Are sarcomere thick filaments linked laterally by proteins of the Z line?

No, the M line


The basic unit of muscle contraction is the sarcomere which is?

the distance from one Z line to the next


What molecule is connected to the Z disc?

Actin


A sarcomere is?

A sarcomere consists of thin and thick filaments arranged so they can slide over each other. The boundary of the sarcomere are the Z lines. Thin filaments extend from the Z lines and overlap with thick filaments in the middle of the sarcomere. The I band is on each side of the Z line where only thin filaments occur. The A band is the length of the thick filaments and is divided into three parts; the zone of overlap is on each end where thin and thick filaments occur, the H band is in the middle and has only thick filaments, and the M line is the center of the A band.


What are the outer boundaries of the sarcomere?

Z-lines


What defines a sarcomere?

A sarcomere is the basic unit of a striated muscle. In humans, each muscle is composed of multiple bundles of muscle fibers or cells. Each fiber is comprised of myofibrils. In between sarcomeres lies the z line or the z disc. When strained, the z line appears dark with a distinct border. In the z lines, thin filaments reach toward the center, and overlap. These filaments all represent the structures of the sarcomeres.


What is the regions of a muscle fiber separated by Z discs?

sarcomere