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Because the volume of the muscle has to stay pretty much the same. It can be either long and slender or short and stubby. It's like having two bricks - you can either stack them on top of each other or lay them out in a row. The volume stays the same anyhow.
Wiki User
∙ 14y ago
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∙ 9y agoThe belly of a muscles bulges when it is contracted because that's where all of the excess muscle is concentrated. When the muscle is not contracted, the bulge goes away.
Wiki User
∙ 13y agoTheres a little elf inside your muscle and when is contracts it pushes up!
Wiki User
∙ 8y agoBecause the muscle is a set volume. It can't become bigger or smaller, but It can be long and slender or short and stubby. Both these shapes take up the same volume.
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When your quadriceps bulge out are these muscles contracting or relaxing?
Contracting or contracted. Related Information: When any muscle bulges it is contracted. Muscles work by contracting , and as they contract, the y bulge . As they relax again, they elongate, causing the bulging to subside.
What is the difference between the contracted muscle and a relaxed muscle?
contracted muscle and relaxed muscle whats are the difference? contracted muscle means its very very contracted and relaxed muscle means its very very relaxed
What is the middle part of a muscle known as?
The "middle" part of a muscle is the muscle belly. For instance, the peak of the biceps is the belly of that muscle - it is the part of the biceps musculotendinous unit that can be contracted, as in "make a muscle" when flexing the biceps. Musculotendinous unit: A muscle is anchored at both ends, usually by tendons, so that when a muscle is flexed or shortened concentrically, the muscle fibers pull closer together and the tendons pull on the bones that they are attached to, closing the joint angle that the muscle affects - in this case, bringing the forearm closer to the upper arm, decreasing the joint angle at the elbow.
What is the difference between a strong muscle contraction and a weak muscle contraction?
one would be the amount of contractile strength that results from a muscle contraction.
Are there such things as partially contracted muscle fibers?
That is very good question! You do not have any thing like partially contracted muscle fibres, most probably. What you have got is partially contracted muscles. The muscle is more or less contracted as per the number of muscle fibres that are contracted at any given time.
What is the difference between a contracted muscle and a relax muscle?
i don't no what is the answer?
Why does a belly of a muscles bulge when it contract?
Because the muscle is a set volume. It can't become bigger or smaller, but It can be long and slender or short and stubby. Both these shapes take up the same volume.
What is a sentence for bulge?
There was a strange bulge in the lawn.The Battle of the Bulge is a historic event.Karen went to the doctor as soon as she noticed a bulge beneath one of her breasts.
What happens when an entire muscle contracts strongly and stays contracted?
when a muscle cramps
How could you detect if the muscle contracted?
ya muscles contracted due to actin and myocin protein comtracted
What would occur if a muscle became totally depleted of ATP?
the muscle will remain contracted
What is a painful contracted muscle that will not relax called?
Tetany
