Muscle contraction. A process in which force is generated within muscle tissue, resulting in a change in muscle geometry. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force.
https://en.wikipedia.org/wiki/Muscle_contraction
This is the end of the preview. Sign up to access the rest of the document. Unformatted text preview: One end of each _____ is attached to a Z disk, and the other end is pulled past myosin. As a result, the Z disks move closer together.
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Calcium ions (Ca2+) link action potentials in a muscle fiber to contraction. 1  In resting muscle fibers, Ca2+ is stored in the endoplasmic (sarcoplasmic) reticulum. 2  Spaced along the plasma membrane (sarcolemma) of the muscle fiber are inpocketings of the membrane that form T-tubules.
http://biology-pages.info/M/Muscles.html
Muscle contractions can be described based on two variables: length and tension. A muscle contraction is described as isometric if the muscle tension changes but the muscle length remains the same. In contrast, a muscle contraction is isotonic if muscle length changes but the muscle tension remains the same.
https://en.wikipedia.org/wiki/Muscle_contraction
Illustration of the interaction between thick and thin filaments in a muscle contraction. Your muscles work in a similar fashion. Muscles are composed of two major protein filaments: a thick filament composed of the protein myosin and a thin filament composed of the protein actin. Muscle contraction occurs when these filaments slide over one another in a series of repetitive events.
http://study.com/academy/lesson/muscle-contraction-actin-and-myocin-bonding.html
There are two main proteins that regulate actin and myosin interactions: tropomyosin and troponin. Tropomyosin is a long strand that loops around the actin chains in the thin filament. By covering the myosin-binding sites of the actin molecules, tropomyosin prevents muscle contraction.
http://study.com/academy/lesson/muscle-contraction-actin-and-myocin-bonding.html
Muscle cells are specialized to generate force and movement. There are three types of muscle tissue: (1) skeletal muscle, (2) smooth muscle, and (3) cardiac muscle. Skeletal Muscle. Attached to the bone and moves them by contraction. The contraction is initiated by neural impulses and is under voluntary control.
http://www.biology-online.org/9/10_muscle.htm
A single skeletal muscle, such as the triceps muscle, is attached at its. 1  origin to a large area of bone; in this case, the humerus. 2  At its other end, the insertion, it tapers into a glistening white tendon which, in this case, is attached to the ulna, one of the bones of the lower arm.
http://biology-pages.info/M/Muscles.html
During the period of contraction, _____ form and the muscle fiber shortens. Once myosin binds to actin, _____ changes shape, pulling the two filaments past one another. myosin As the two filaments (actin and myosin) slide past one another, _____ are released from the myosin. In order for myosin to release actin, it must bind _____.
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Each myofibril is made up of arrays of parallel filaments. 1  The thick filaments have a diameter of about 15 nm. They are composed of the protein myosin. 2  The thin filaments have a diameter of about 5 nm. They are composed chiefly of the protein actin along with smaller amounts of two other proteins: troponin and.
http://biology-pages.info/M/Muscles.html
which two microfilaments are pulled past each other to create a muscle contraction?
A thick filament which is composed of the protein myosin and a thin filament which is composed of the protein actin are two microfilaments which are pulled past each other to create a muscle contraction. A thick filament composed of the protein myosin and a thin filament composed of the protein actin are pulled past each other to create a muscle contraction.