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When a muscle contracts, the actin and myosin myofilaments come together, the H zones and I zones shrink and become very narrow. The A band does not changing during contraction.
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∙ 10y ago
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Specifically what is responsible for the banding pattern in skeletal muscle cells?
Prosomes form sarcomere-like banding patterns in skeletal, cardiac, and smooth muscle cells.Actin and Myosin proteins
When a muscle contracts how does its form change?
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
What is the cause of the banding pattern visible in striated muscle?
The combination of thick and thin filaments create a banding pattern in striated muscle. This banding pattern is caused by muscle fibers being packed with organelles called myofibrils.
What is a smooth muscle that contracts or relaxes to change the volume of the chest?
The Diaphragm.
What does a muscle become when it contracts?
A muscle becomes shorter when it contracts.
When one muscle contracts what happens to the opposing muscle?
When one muscle in a pair contracts the other expands.
When muscle contracts it is?
Flexion
When a muscle contracts it?
shortens
When the muscle contracts it is?
Flexion
When a muscle contracts?
shortens
Which muscles contracts when the leg is extended at the knee?
The muscle that contracts when the leg is extended at the knee is call the gastrocnemius muscle
What happens when the biceps muscle contracts?
When the bicep contracts the triceps relax
