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Physiology General adea55d7

The latch bridge mechanism helps in which of the following in smooth muscles?

A
Initiation of contraction
B
Sustained contraction
C
Early dephosphorylation
D
None of the above
High-Yield Explanation
Latch bridge mechanism is one in which myosin cross bridges remain attached to actin for some time after cytoplasmic Ca2+ concentration falls. This causes sustained contraction with little ATP. This is of impoance in smooth muscles. Ref: Ganong's, Review of medical physiolgy, 21st Edition, Page 84

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