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Immediately following the hydrolysis of ATP during muscle contraction, the energy released is used to power the movement of myosin heads on the actin filaments, leading to muscle contraction. This process involves the myosin head binding to actin, forming a cross-bridge, and then performing a power stroke that pulls the actin filament inward. As a result, the muscle fibers shorten, generating force. The cycle continues as more ATP is hydrolyzed, allowing for sustained contraction.
What else can I help you with?
What is the period of isovolumetric contraction is immediately followed by?
The period of isovolumetric contraction is immediately followed by the period of ventricular ejection in the cardiac cycle. During isovolumetric contraction, the ventricles contract while all valves are closed, and this is followed by the opening of the semilunar valves to allow blood to be ejected from the heart during ventricular ejection.
What chemical reactions occur in the muscle during latent period of muscle contraction?
During the latent period of muscle contraction Ca++ is being released from the sacroplasmic reticulum and filament movement is taking up slack. This takes approx. 2 milliseconds.
When is an intraocular lens inserted during phacoemulsification?
The insertion of an intraocular lens (IOL) usually immediately follows phacoemulsification.
The stage in an action potential that immediately follows depolarization is?
The stage that immediately follows depolarization in an action potential is repolarization. During this stage, potassium channels open and potassium ions move out of the cell, leading to a restoration of the cell's negative charge.
Where does ATP attach during muscle contraction?
During muscle contraction, ATP attaches to the myosin heads of the thick filaments in the muscle fibers. When ATP binds to myosin, it causes the myosin head to detach from the actin filament, allowing for a new cycle of cross-bridge formation and muscle contraction to occur. The hydrolysis of ATP then provides the energy necessary for the myosin head to pivot and pull the actin filament, leading to muscle shortening.
What else is released during the hydrolysis of ATP?
Phosphate
Immediately following the arrival of the stimulus at a skeletal muscle cell is a short period called the ------------ period during which the events of excitation-contraction coupling occur?
latent period
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!
Where and how does hydrolysis occur during digestion?
In your mouth, amalyze chemically digests new food through your spit. This is a form of hydrolysis in digestion.
Does the Z line shorten during muscle contraction?
Yes, the Z line shortens during muscle contraction.
What happens to a muscle contraction if there is an excess amount of either Ca2 plus or ATP present during the contraction?
During muscle contraction the actin heads pull the sarcomere closed
The muscle decreases in muscle length during contraction but tension is the same?
Isotonic contraction
