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During movement, the muscle that lengthens is typically the antagonist muscle, which opposes the action of the primary mover (agonist). For example, when you extend your arm, the biceps (agonist) contracts while the triceps (antagonist) lengthens. This lengthening allows for controlled movement and stabilization of the joint involved. This process is known as eccentric contraction.
What else can I help you with?
The muscle lengthens during?
The muscle lengthens during a process called eccentric contraction. In this type of contraction, the muscle generates force while being elongated, such as when lowering a weight or during the downward phase of a squat. Eccentric contractions are important for activities that require controlled movement and help to build muscle strength and stability.
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 scientific word use when a muscle gets longer and get shorter?
The scientific terms for these processes are "eccentric contraction" and "concentric contraction." During eccentric contraction, a muscle lengthens while generating force, often when resisting an external load. Conversely, during concentric contraction, a muscle shortens while actively generating force, typically when lifting or moving a load. Together, these actions are essential for muscle function and movement.
What does the triceps muscle do when the bicep contracts and gets shorter?
When the biceps muscle contracts and shortens, it primarily flexes the elbow, bringing the forearm closer to the upper arm. In this action, the triceps muscle relaxes and lengthens to allow for smooth movement, acting as an antagonist to the biceps. This coordinated action helps maintain balance and control during arm movements.
What term means the lack of the muscle coordination during voluntary movement?
Ataxia: the lack of muscle coordination during voluntary movement.
What happens during an eccentric contraction?
During an eccentric contraction, a muscle lengthens while generating tension, typically occurring when it resists a force greater than its own contraction strength. For example, this happens when lowering a weight or during the downward phase of a squat. Eccentric contractions play a crucial role in controlling movement and absorbing shock, helping to prevent injuries. This type of contraction is characterized by a gradual increase in muscle tension while the muscle is elongating.
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.
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 Contracts to produce movement?
Contracts that produce movement include concentric, eccentric, and isometric contractions. Concentric contractions occur when a muscle shortens while generating force, such as lifting a weight. Eccentric contractions happen when a muscle lengthens while under tension, like lowering a weight. Isometric contractions involve muscle activation without changing the muscle length, as seen in a plank hold.
