0
Histological Perspective
Both ends of the muscle are pulled together. This is because each muscle fiber is divided into contractile units called sarcomeres. Each sarcomere is composed of layers of thin and thick filaments, Actin and Myosinrespectively. The thick filaments, myosin, are located in the center of the sarcomere, a region called the A-Band. On either side of each A-Band, is a region called the I-Band. The I-Band is primarily composed of the thin filaments (Actin), although the thin filaments do overlap with the thick filaments within a sub region of the A-band called the zone of overlap.
As the muscle contracts the thick filaments pull the thin filaments together on either side, resulting in the apparent contraction of the muscle on both sides.
Gross Anatomical Perspective.
However, because a muscle is anchored at the origin of the stationary bone while its other end attaches at the insertion of the articulating bone and the net force of the contracting muscle pulls the insertion of the muscle to its origin.
It follows that: The correct answer is toward the origin.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the end of the muscle that is attached to the movable bone and moves when a skeletal muscle contracts?
Insertion point, which most probably is a tendon.
When a skeletal muscle contracts it usually moves the bone at one end much more than the bone at its other end The attachment of the muscle to the less moveable bone is called its?
origin
When the muscle contracts it pulls on and moves that bone at the joint?
ligament
What do you get when the muscle at the end of the follicle contracts?
uranus
When you flex your arm muscle what happens?
The muscle in your arm contracts. The muscle on the other side of your arm, opposite from the side that you are flexing, stretches.
Which end of muscle moves the most?
The insert
What does a muscle become when it contracts?
A muscle becomes shorter when it contracts.
The muscle contracts and shortens and the insertion end moves toward the point of origin. This sentence describes?
Essentially the second half of your question is what happens when a muscle contracts on a larger scale. On a much smaller scale, the contraction of muscle is caused by myosin proteins pulling themselves along the surface of an actin protein, which shortens the muscle. Muscles pull the bone that they are attached to at their point of insertion towards their point of origin.
Does the end of the muscle attached to the bone that moves least is the origin of that muscle?
they dont u retard
When a muscle contracts how does its form change?
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
When one muscle contracts what happens to the opposing muscle?
When one muscle in a pair contracts the other expands.
What happens to the muscle as the arm moves down?
One group of muscles contracts, and the other group extends. As an arm moves down, the bicep muscle (the one that faces the front side of the body and goes from the shoulder to the elbow) relaxes. When the muscle relaxes, it goes from being contracted to elongated. This relaxation happens at the same time that the tricep muscle (the one that faces the backside of the body and goes from the shoulder to the elbow) contracts. This happens because the human body's skeletal muscles have what can be considered compliments. I say this to mean that when a muscle relaxes, there is a muscle that contracts simultaneously. Therefore, they move antagonistically to each other. This is to serve the purpose of creating specific movements that help assist in locomotion. On the molecular level of what happens when a muscle contracts and relaxes, the actin and myosin filaments in muscle fiber overlap to contract and separate to relax.
