A muscle has a limit to how much it can contract, based on the limit of contraction of each sarcomere. If a muscle's extended length is 10 cm, what length (in cm) is the shortest it can become when it contracts?

Q: What do you mean by muscle bundles?

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Q: A major protein in the muscle is a thick fiber called actin.

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Q: There are 3 types of muscle... skelatal, smooth and cardiac. What type of contraction are they…

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Q: Without ATP, relaxed muscle cannot contract and a contracted muscle cannot relax. Explain why.

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A: Actin Myosin ATP

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Q: At the level of the sarcomere, explain the sliding filament model for how muscle contracts

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Q: Which of the following statements regarding summation in skeletal muscle fibers is true?…

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Q: Unlike skeletal muscle smooth muscle Mayer spontaneously contract when it is. What feature of smooth…

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Q: As skeletal muscle shortens with contraction, the length of the I band remains constant as the…

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Q: Muscles that maintain posture are composed primarily of what type of skeletal muscle fibers?

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Q: Muscle fibers contain which of the following?

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Q: structural organization of muscle fibers makes it possible to produce contractile force

A: Answer: Sarcomere of Muscles fibre or myofibre is the basic contractile unit of skeletal muscle.

Q: What Are the thick and thin filaments in muscle fibers that slide past each other called?

A: Thick filaments are composed of myosin proteins (myosin filaments) whereas thin filaments are…

Q: How would muscle contractions be affected if skeletalmuscle fibers did not have T-tubules?

A: Muscles:                    In animals, soft tissues found known as muscles. Muscles cells contain…

Q: The repetitive contraction unit in muscle cells is called: Select one: O a. A Band O b. Fibril O c.…

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Q: A fatigued muscle will

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Q: Which of the following regions of a sarcomere does not change length during a contraction because it…

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Q: Which of the following skeletal muscle fiber types would have the fastest contractions and the…

A: Muscles are composed of a group of muscle fibers. Fibers of skeletal muscles are classified into…

Q: Which choice lists the components of a muscle from the smallest unit to the largest unit?   A.…

A: Muscles tissue are soft tissues that help the animal body to contract and relax in the way the body…

Q: mitochondria

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Q: In the sliding filament theory of contraction, what prevents the filaments from sliding back to…

A: Sliding filament theory of muscle contraction: this theory states that sliding of actin filament…

Q: Regarding the muscles, why electric impulses are important in the contraction mechanisms? Explain.

A: Neuromuscular junction or NMJ is accountable for the transfer of electrical signals from the neurons…

Q: If a muscle is contracted and shortening, what happens to the following: (a) width of the A band,…

A: A myofibril has light bands (A-bands or anisotropic bands) and dark bands (I-bands or isotropic…

Q: What structure invaginates into the middle of the muscle cell to transport Ca2+ into the middle of…

A: Muscle contraction is a process in which the actin and myosin filaments slide past each other.…

Q: What is the steps in the Sliding Filament theory of muscle cell contraction in correct order?…

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Q: Explain how microscopic and macroscopic anchoring of musclefilaments enables you to bend your elbow

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Q: Explain the concept of the following in regard to muscle cells: sliding filament movement does not…

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Q: Skeletal muscles can only produce a mechanical force as they are contracted, but a leg flexes and…

A: The force exerted by the muscle is less than its maximum in a concentric contraction, and the muscle…

Q: What will happen to the muscle if ATP was added, then salt? Explain

A: Muscles are the tissues that consists of longitudinal cells that helps in the movement in the body.…