During muscle contraction, the origin (the attachment point of the muscle that remains relatively fixed) and the insertion (the attachment point of the muscle that moves) move closer together. This results in the muscle shortening and causing movement at the joint.
During muscle contraction, the Z-lines move closer together as the sarcomeres shorten. This is due to the sliding of actin and myosin filaments past each other, resulting in the contraction of the muscle.
During muscle contraction, the Z line moves closer together, causing the muscle to shorten and generate force.
ATP is required during a muscle contraction because it provides the energy needed for the muscle fibers to contract and generate force. Without ATP, the muscle would not be able to contract effectively.
The less movable attachment point of a muscle is called the origin. This is typically the point of attachment that remains relatively fixed during muscle contraction, while the other end, known as the insertion, moves towards the origin.
the position at which the end of the muscles is attached by means of a tendon to a movable bone whereas insertion is the attachment of muscles to the movable bone.. also origin is generally closer to the mid line of the body whereas insertion is farther away..
During muscle contraction, the Z-lines move closer together as the sarcomeres shorten. This is due to the sliding of actin and myosin filaments past each other, resulting in the contraction of the muscle.
During muscle contraction, the Z line moves closer together, causing the muscle to shorten and generate force.
During muscle contraction the actin heads pull the sarcomere closed
Where a muscle attaches to a bone is at the origin and insertion points. The origin is the immovable (or slightly moveable) attachment point and the the insertion is the movable attachment point. During contraction the insertion moves towards the origin. HOW a muscle attaches to a bone is through tendons.
Insertion
The muscle length will not change during a contraction.
The origin is the "immovable" point of attachment of a muscle to a bone.
The "movable" end of a muscle is called the insertion. The "immobile" end is called the origin. Shortening, or contraction, of a muscle causes the origin and insertion to become closer to one another.
The term that identifies the site where a muscle attaches to the bone it pulls on is called the "insertion." This is typically the more movable attachment of the muscle, as opposed to the origin which is the less movable attachment site.
It increases about to about four times greater than a normal contraction for skeletal muscle.
muscle contraction
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.