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Muscle fiber generates tension through the action of actin and myosin cross-bridge cycling. While under tension, the muscle may lengthen, shorten, or remain the same. Although the term contraction implies shortening, when referring to the muscular system, it means muscle fibers generating tension with the help of motor neurons (the terms twitch tension, twitch force, and fiber contraction are also used).
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What is a concentric contraction?
concentric contraction is atype of muscle contraction which the muscle shortens while genrating aforce The muscle shortens to produce movement. A muscle contraction in which shortening occurs.
What factors affect muscle contraction?
the degree of muscle stretch is affect the strength or force of skeletal muscle contraction
What is a contraction in which the muscle shorten and work is done?
This is muscle flexion or isotonic contraction.
True or false When the contraction of a skeletal muscle is studied in the laboratory by applying an electrical charge to the muscle the contraction is called a muscle twitch.?
true
Why is atp important in muscles?
ATP is important in muscle contraction. ATP is high energy bond which gives you energy required for muscle contraction.
What is a concentric contraction?
concentric contraction is atype of muscle contraction which the muscle shortens while genrating aforce The muscle shortens to produce movement. A muscle contraction in which shortening occurs.
What muscle contraction occurs in the biceps brachii during the upward phase of the bicep curl?
a concentric contraction- a concentric contraction involves the muscle length, shortening during a contraction! YA-trick-YA!
What is a sustained muscle contraction?
Occurs when acetylcholine (ACh) accumulates in the neuromuscular junction. It is called a tetanic contraction.
When a muscle contraction occurs?
your muscles moves, moving ligaments and tendons
Uncontrolled muscle contractions the same as skeletal muscle contractions?
Uhh, no uncontrolled muscle contraction occurs in smooth and cardiac muscles... there are many differences between these two types of muscles; controlled and uncontrolled muscle contraction.....
What type of muscle contraction occurs when force is exerted against an immovable object?
isometric
What kind of muscle contraction occurs in the rectums femoris during the lowering phase of a wall squat?
isometric
What is muscle contraction without muscle shortening is what kind of contraction?
Isometric contraction
Constant contraction of a muscle is?
constant contraction of a muscle is called the muscle tone
A muscle is stimulated and exhibits a contraction twitch Before this twitch is over it is stimulated again and a second twitch occurs piggyback on the first one and causes a higher contraction?
summation
What does the contraction of the gastrocnemius muscle usually result in?
type of contraction of gastrocnemius muscle?
Describe the events of muscle cell contraction?
6 steps in a muscle contraction
