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What is a contraction in which the muscle shorten and work is done?
This is muscle flexion or isotonic contraction.
When a muscle shortens it means what?
It is called a concentric contraction. The muscle gets shorter in preparation to do work.
When muscles lengthen?
The lengthening of a muscle is called 'relaxing'. As the SHORT muscles work antagonistically- when one contracts, one relaxes. Therefore as one muscle shortens the other lengthens. This is between the bicep and tricep and the hamstring and quadricep. When a muscle shortens it also thickens, this is why you can feel your muscle rise when you bring your arm towards you.
What are contracting of the muscles?
Muscle contraction is the process in which muscle fibers generate force and shorten in length. This process is controlled by signals from the nervous system and occurs when actin and myosin filaments slide past each other, which shortens the muscle fiber. Muscle contraction is essential for movement, stability, and other physiological functions in the body.
What is Lengthening of muscle is called?
The lengthening of a muscle is called 'relaxing'. As the SHORT muscles work antagonistically- when one contracts, one relaxes. Therefore as one muscle shortens the other lengthens. This is between the bicep and tricep and the hamstring and quadricep. When a muscle shortens it also thickens, this is why you can feel your muscle rise when you bring your arm towards you.
How does resistance training work?
Resistance training works by inducing muscle contraction. Doing this helps build muscles and strength. That is because muscle contraction generates tension on the muscle and forces it to move.
What is the process that takes place in a muscle cell to produce energy for it to work?
Contraction
When muscle cell demands energy to perform its work of contraction what happens to ATP?
ATP breaks down when a muscle cell demands energy to perform its work of contraction. ATP, which is a nucleoside triphosphate, stands for adenosine triphosphate.
What is a principal character in a literary work also a muscle which causes movement through contraction?
agonist
How do muscle cells move?
the function of a muscle cell is, by definition, to move. this can be accomplished when the cell contracts. contracting makes it denser, which is why when you feel a relaxed muscle in your arm suddenly tense up, it hardens.A muscle cell expands and contracts in order to allow the human body to control the movement of it's limbs.
Why do muscles work in antagonistic pairs?
Because muscle can only contracts. The only way for it to lengthen is by having an outside force, ie, another muscle's contraction.
Whats the name of the chemical in the muscular system that causes contraction?
There's more than one chemical that causes contraction. The neurotransmitter (usually acetylcholine) is released from the nerve and excites the muscle. There is a change in calcium, sodium and potassium ion concentrations. ATP is used. All of these work together to produce a muscle contraction.
