In Smooth Muscle, Cross-Bridging Occurs Due to

question 174

Multiple Choice

In smooth muscle, cross-bridging occurs due to

• A) Ca²⁺ binding to troponin.
• B) Ca²⁺ binding to calmodulin.
• C) myosin kinase adding a phosphate to myosin heads.
• D) both Ca²⁺ binding to troponin and calmodulin.
• E) both Ca²⁺ binding to calmodulin and myosin kinase adding a phosphate to myosin heads.

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