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What happens after the electricity reaches the muscles?
After electricity reaches the muscles, it triggers the release of calcium ions within the muscle fibers. This causes the muscle fibers to contract and generate force, allowing movement to occur.
What is muscle protein?
it is tiny muscle fibers that contract and expand the muscle
What is it called when white muscle fibers that contract quickly?
Fast-twitch muscle fibers.
When a single neuron sends a strong enough impulse to a muscle that how many muscle fibers does it cause to contract?
When a single neuron sends a strong enough impulse to a muscle, it can cause multiple muscle fibers within that muscle to contract. The specific number of muscle fibers that contract will depend on factors like the size of the motor unit and the intensity of the signal from the neuron.
Which cells have long fibers that can contract and relax?
Muscle cells can contract and relax and lave fibers as long as 1.5 feet.
Does glycerinated skeletal muscle fibers need calcium in order to contract?
Yes, glycerinated skeletal muscle fibers still require calcium in order to contract. The glycerination process maintains the basic structure of the muscle fibers but removes cellular components, allowing for the fibers to contract in response to calcium in a controlled laboratory setting.
When muscle fibers are stimulated to contract what is occur ing?
When muscle fibers are stimulated to contract, an electrical impulse travels along the muscle cell membrane, leading to the release of calcium ions from the sarcoplasmic reticulum. This release of calcium triggers the interaction between actin and myosin filaments, the proteins responsible for muscle contraction. The myosin heads attach to actin and pull, causing the muscle fiber to shorten and generate force. This process is known as the sliding filament theory of muscle contraction.
Do all types of muscle fibers produce movement?
No, intrafusal fibers don't contract.
Why is ATP required for muscle contraction?
ATP is required for muscle contraction because it provides the energy needed for the muscle fibers to contract and generate force. Without ATP, the muscle fibers would not be able to move and contract effectively.
What is the role of slow muscle fibers and fast muscle fibers in the response of a muscle to different types of exercise?
There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.
What is the function of the muscle fibers?
Muscle fibers contract to generate force and produce movement in the body. They are responsible for actions such as lifting objects, running, and even maintaining posture. Additionally, muscle fibers play a vital role in regulating body temperature and supporting various bodily functions.
Once a motor neuron has fired all the muscle fibers in a muscle contract?
False
