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The sliding filament theory is the explanation for how muscles produce force (or, usually, shorten). It explains that the thick and thin filaments within the sarcomere slide past one another, shortening the entire length of the sarcomere. In order to slide past one another, the myosin heads will interact with the actin filaments and, using ATP, bend to pull past the actin.

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Huxley's Sliding Filament Theory is a model that explains how muscle contractions occur at a molecular level. It proposes that muscle contraction is the result of thin filaments sliding past thick filaments within muscle cells, causing the muscles to shorten. This theory has been widely accepted and forms the basis for our understanding of muscle contraction mechanisms.

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Q: What is Huxley's Sliding Filament Theory?
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What is the model that best describes the contraction of the muscle called?

The sliding filament theory is the model that best describes muscle contraction. It explains how actin and myosin filaments slide past each other, resulting in muscle fiber shortening and contraction. This theory is widely accepted in the field of muscle physiology.


What are the steps in sliding filament theory?

Before contraction:1) no nerve impulse to myoneural junction.2) Ca++ in the sarcoplasmic reticulum3) combining of actin and myosin is prevented by a tropomyosin-troponin complex that attatches to the actin.Contraction:1) an action potential (nerve impulse) travels along a neural axon to a myoneural junction (synapse)2) Acetylcholine (neurotransmitter) is released from the synaptic vesicles of the neuron.3) acetylcholine diffuses over into the sacrolemma and the t-tubules.4) Ca++mis released from the sarcoplasmic reticulum.5) the Ca++ then binds to the actin degrading the tropomyosin-troponin complex to expose myosin attatchment sights6) the heads of the myosin myofilaments attatch to the exposed attatchment sights on actin filament7) ATP binds to the heads of the myosin filaments. breakdown of the ATP to ADP+p releases energy and causes a bending of myosin heads.8) another ATP binds to the myosin head causing it to release the actin filament then attatch again with the head unbent. again the ATP breaks down and the process continues.To relax:1) nerve impulse stops2) active transport returns Ca++ to the sarcoplasmic reticulum3) ATP's are reformed (ADP+P+energy=ATP)4) Tropomyosin-troponin complex reforms causing the myosin to release the actin5) when the filaments release each other they slide back to the resting position.


Sliding filament model which proteinS have a calcium binding site?

In the sliding filament model of muscle contraction, the protein troponin has a calcium binding site on the troponin C subunit. When calcium binds to troponin C, it triggers a conformational change in the troponin-tropomyosin complex, allowing myosin heads to interact with actin and initiate muscle contraction.


The sliding filament mechanism of muscle contraction involves?

The sliding filament mechanism of muscle contraction involves the interaction between actin and myosin proteins within muscle fibers. When muscles contract, myosin heads bind to actin filaments, causing them to slide past each other and generate force. This process is driven by the hydrolysis of ATP to provide the energy needed for muscle movement.


What is another word for a filament?

A synonym for filament is thread.

Related questions

What filament is responsible for the pulling and what filament is pulled in the sliding filament theory?

In the sliding filament theory of muscle contraction, the thin filament (actin) slides over the thick filament (myosin). Myosin is responsible for pulling the actin filaments towards the center of the sarcomere during muscle contraction.


Who proposed the sliding filament theory?

it was a collaboration between Jean Hanson and Hugh Huxley


When muscles contract do the myofilaments themselves actually shrink?

the myofilaments themselves do not contract, they slide, this is called the Sliding Filament theory, in which the thick filament (Myosin) slides over the thin filament (Actin).


Why is sliding filament theory important?

The sliding filament theory is important because it explains how muscles generate force and contract. It helps us understand the physiological processes that enable muscle movement and how muscles interact with nerves to produce movement. This theory serves as a foundation for research and advancements in exercise physiology, rehabilitation, and sports performance.


In isometric contraction how does the muscle stay the same length when the sarcomeres are shortening according to the sliding filament theory?

Dear freind! there is not any filamnet sliding in isometric contraction and so there is no work...


Physical evidence that supports the sliding filament theory of muscle contraction includes?

decreased width of the H band during contraction


The sliding filament model of contraction involves .?

The sliding filament model of contraction involves actin filaments overlapping myosin filaments.


What is the birth name of Huxleys?

Huxleys's birth name is Mariafe Ponce.


Principle by which muscle fibers contract?

Sliding filament mechanism


What myofilament does the pulling?

The myosin myofilament pulls on the actin myofilament during muscle contraction. This interaction, known as the sliding filament theory, results in the shortening of the sarcomere and muscle contraction.


What is the model that best describes the contraction of the muscle called?

The sliding filament theory is the model that best describes muscle contraction. It explains how actin and myosin filaments slide past each other, resulting in muscle fiber shortening and contraction. This theory is widely accepted in the field of muscle physiology.


In the sliding filament mechanism the thin filament is being pulled toward the?

M-line, causing overlap with the thick filament during muscle contraction. This results in the sarcomere shortening and overall muscle contraction.