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The T tubules conduct electrical impulses that stimulate calcium release from the sarcoplasmic reticulum.

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12y ago
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5mo ago

The skeletal muscle fiber triad relationship refers to the structural arrangement of a T-tubule sandwiched between two terminal cisternae of the sarcoplasmic reticulum. This triad structure plays a crucial role in excitation-contraction coupling, as it allows for the transmission of action potentials deep into the muscle fiber to trigger calcium release from the sarcoplasmic reticulum for muscle contraction.

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Q: What is the significance of the skeletal muscle fiber triad relationship?
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What are the structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction?

The structures within the muscle fiber that shorten to cause skeletal muscle contraction are called myofibrils. Myofibrils are composed of repeating units called sarcomeres, which contain thick and thin filaments made of proteins (actin and myosin). When the muscle fiber is stimulated by a nerve impulse, the myosin heads interact with the actin filaments to generate the force required for muscle contraction.


A skeletal muscle cell is also known as a?

A skeletal muscle cell is also known as a muscle fiber. It is a long, multinucleated cell that contracts to produce movement in the body.


The structure storing calcium in the skeletal muscle fibers at rest is the?

The structure responsible for storing calcium in skeletal muscle fibers at rest is the sarcoplasmic reticulum. This organelle regulates the release of calcium ions during muscle contraction to trigger the muscle fiber to contract.


What is the advantage of having many nuclei in a skeletal muscle fiber?

Having many nuclei in a skeletal muscle fiber allows for efficient repair and regeneration of the muscle tissue. It enables the muscle fiber to synthesize proteins and grow in response to exercise or injury. Additionally, the multiple nuclei provide more genetic material for protein production, enhancing the muscle's ability to adapt and increase in size.


Why are skeletal muscle cells multinucleated?

Skeletal muscle cells are multinucleated because they form from the fusion of multiple myoblasts during development. Each nucleus contributes to the overall functioning and maintenance of the muscle cell. This multinucleation allows for efficient protein synthesis and repair in the large, elongated muscle fibers.

Related questions

What is the multinucleate muscle fiber?

Skeletal


How relaxation in a skeletal muscle fiber occurs?

Relaxation of a skeletal muscle usually involves the Golgi tendon proprioceptors.


Most skeletal muscles contain?

muscle fiber


A specialized cell found in a skeletal muscle is called a muscle fiber?

true


The cytoplasm of a skeletal muscle fiber is called the?

Sarcoplasm


What are the repeating segments seen in skeletal muscle fiber?

sarcomeres


What is the correct sequencing of the microstructure of skeletal muscle?

muscle fiber, myofibril, myofilaments, sarcomere


What is the name of small contractile elements of skeletal muscle fiber?

sarcomere


How are the Neuron and skeletal muscle fiber connected?

they are connected with the rope in the body


How is a skeletal muscle fiber stimulated by a motor neuron?

motor unitUnit


What are the striated appearance of skeletal muscle fiber is mainly due to?

cardiac muscle appears striated like the skeletal muscle due to arrangement of contractile proteins


What type of sensory receptors are made up of very small skeletal muscle fiber?

muscle spindles