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skeletal muscle that do a lot of work become stronger and larger. Some of this change in muscle size is because of an increase in the number of muscle cells. But most of the change is because individual muscle cells become larger. Muscles that are not exercised become smaller and weaker
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∙ 8y ago
Muscles change through a process called hypertrophy, which involves an increase in the size of muscle fibers by adding more proteins and filaments. This can occur through strength training exercises that create micro-tears in the muscle fibers, prompting the body to repair and rebuild them to be stronger and larger. Additionally, muscle size can also be influenced by factors such as nutrition, hormone levels, and genetics.
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How do isotonic and isometric contraction differ?
Isotonic contractions involve a change in muscle length and joint movement, while isometric contractions do not result in joint movement or change in muscle length. Isotonic contractions are further classified into concentric (muscle shortens) and eccentric (muscle lengthens) contractions. Isometric contractions involve the muscle producing tension without changing its length.
The 2 most fundamental requirements for movement are a change in position and what?
The other fundamental requirement for movement is the application of force, such as muscle contraction, to enable the change in position. Both a change in position and the application of force are necessary for an object or organism to move from one place to another.
Does depolarization mean contraction?
No, depolarization refers to the change in electrical charge within a cell, specifically during the initiation of an action potential. Contraction refers to the shortening or tightening of muscle fibers, which is a separate physiological process that can be triggered by depolarization in muscle cells.
What type of exercise involves pushing against a fixed surfaces?
Isometric exercise involves pushing against a fixed surface. This type of exercise involves static contractions where the muscle length does not change during the movement. It is effective for building strength and increasing muscle endurance.
What band does not change its length during shortening of the sarcomere?
The thick filaments (made of myosin) do not change length during shortening of the sarcomere. They slide past the thin filaments (made of actin) to generate muscle contraction.
How does ciliary muscle change the shape of the lens?
its a muscle
What is a muscle cell?
A muscle cell is a cell which can change length
When a muscle contracts how does its form change?
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
Do muscle spindles measure the rate of stretch of a muscle?
They measure the rate of change of length of a muscle.
Does muscle length change during isometric movements?
No, the length of the muscle fibers does not change. In isotonic movements is when the length changes.
What happens If a muscle is applied to a load that exceeds the muscle's maximum tension?
The muscle length will not change during a contraction.
Will distilled water change fat into muscle?
No, fat cannot turn into muscle and muscle cannot turn into fat.
If you work out every day why is there no change in weight just muscle tone?
muscle weighs more than fat. your weight may not change because you are gaining muscle mass, which weighs more.
How do you change this question into direct statement - can muscle relaxation help you?
muscle relaxation can help you!
A contraction in which there is no change in muscle length but there is a great increase in muscle tension is?
isometric contractions
What do not act as a stimulus to initiate a muscle contraction a. hormonal activity b. neurotransmitters c. a change in the pH of a muscle d. a change of temperature?
d.
Why might bone cells be differ form muscle cells?
muscle cells change and can move
