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What is the muscle action that occurs when the muscle lengthens while exerting a force to overcome a resistance?
The muscle doesn't lengthen to exert a force. There is actually a muscle on the other side of the bone, that is contracting, exerting the force. Example, most everyone knows of the Bicep (the big muscle on the your arm that guys like to flex for the ladies). Well, the tricep is on the other side (on the back of your arm, connecting to the elbow) and that muscle contracts in order to extend your arm outwards.
How spindle lengthens during anaphase?
tubulin is present in microtubules and tubulin in these microtubules has other protein molecules interect with the adjacent fiber and push the two halves of the spindle away from each other
Which muscle during inspiration doesn't contracted?
The diaphragm.
What is the function role of t tubules?
Enhance cellular communication passage for nervous stimulation during muscle contraction.
What are the product obtained during cellular anaerobic respiration human muscle cell-?
The product obtained during cellular anaerobic respiration human muscle cell water, energy and carbon dioxide.
Can skeletal muscle contract without shortening?
Yes. One possibility is that the load on the muscle exceeds the tension produced by the muscle so that the muscle actually lengthens during contraction (eccentric contraction).
A muscle contraction means the muscle lengthens as it relaxes true or false?
false
When a muscle contracts how does its form change?
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
What is an example of an isotonic contraction?
An Isotonic contraction is when a muscle becomes longer or shorter to produce force and therefore an example is a bicep curl. During the downward phase your muscle (bicep) lengthens and during the upward phase your muscle (bicep) shortens.
A contraction in which a muscle exerts force lengthens and is overcome by a resistance?
Eccentric contraction (isotonic)
What is the antagonist muscle when performing leg curl?
The triceps lengthens when the biceps contracts, making the triceps the antagonist.
What does contraction mean in medical terms?
contract or "contraction" is when a muscle fiber lengthens or shortens
When was Lengthens F.C. created?
Lengthens F.C. was created in 2002.
A contraction in which the muscle does not shorten but its tension increase is called isometric.true or false?
True Tension may build to the muscles peak tension capacity, but the muscle neither shortens or lengthens example. trying to lift a car
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.
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.
Which type of strength training uses machines to increase muscle strength and endurance?
Types of Strength Training Exercises Static (isometric) exercise = muscle contraction without a change in the length of the muscle Dynamic (isotonic) exercise = muscle contraction with a change in the length of the muscle Concentric contraction = muscle applies force as it shortens Eccentric contraction = muscle applies force as it lengthens Types of Dynamic Exercise Constant resistance = constant load throughout a joint's range of motion Variable resistance = changing load to provide maximal resistance throughout a joint's range of motion Eccentric loading = placing load on a muscle as it lengthens Plyometrics = sudden eccentric loading and stretching followed by a concentric contraction Speed loading = moving a load as rapidly as possible Isokinetic exercise = exerting force at a constant speed against an equal force
