During Smooth Muscle Contraction?
Smooth Muscle Contraction Is Initiated When the Ca++ Binds to Intracellular Calmodulin, Which Then Activates an Enzyme Called Myosin Kinase That Phosphorylates...
Smooth muscle contraction is initiated when the Ca++ binds to intracellular calmodulin, which then activates an enzyme called myosin kinase that phosphorylates myosin heads so they can form the cross-bridges with actin and then pull on the thin filaments.
What happens during smooth muscle contraction?
Smooth muscle contraction is caused by the sliding of myosin and actin filaments (a sliding filament mechanism) over each other. The energy for this to happen is provided by the hydrolysis of ATP.
What are the steps of smooth muscle contraction?
Steps involved in smooth muscle cell contraction: Depolarization of membrane or hormone/neurotransmitter activation. L-type voltage-gated calcium channels open. Calcium-induced calcium release from the SR.
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