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Q: What does band A of the sarcomere contain?
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What does an Isotropic band contain?

aka I-Band. The Isotropic band is the section of a striated muscle sarcomere that contains only thin myofilaments. This band, along with the H zone decrease in length during muscle contraction.


What are the 3 sections along the length of sarcomere?

The three sections along the length of a sarcomere are the A band, the I band, and the H zone. The A band is the dark region in the center of the sarcomere that contains both thick and thin filaments, while the I band is the light region at the ends of the sarcomere that contains thin filaments only. The H zone is the region in the center of the sarcomere where only thick filaments are present.


Which region of the sarcomere shortens during contraction the dark band the light band or both?

Dark


What band does not change its length during shortening of the sarcomere?

the A-bandsthe A-bands


The area of the sarcomere containing the thick filaments is the?

I believe that would be in the sarcomeres of muscle cells.


What do you observe in a sarcomere under high magnification?

some band regions I and A disks ....


The giant protein titin maintains the organization of what band assisting the muscle stretching?

Titin is part of the A-band of a Sarcomere.


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.


The sarcomere is defined as the space between two?

One of the segments into which a fibril of striate


What change occur in sacomere during muscle contraction?

The sarcomere itself will become shorter.The sarcomere will shorten.


The enlarged perpendicular chambers of the sarcoplasmic reticulum that store calcium ions lies adjacent to the t tubule at the you band and the a band interface of the skeletal muscle sarcomere?

It is the terminal cisternae


What is the functional unit of a muscle called?

Sarcomere