Latch-bridges

Definition

Latch-bridges are mechanisms within smooth muscle cells that enable sustained tension with minimal energy expenditure by maintaining a tight connection between actin and myosin filaments. These bridges allow smooth muscles to remain contracted for extended periods without quick fatigue.

Related terms

Smooth Muscle:

A type of muscle tissue found in various organs that contracts slowly and involuntarily, responsible for movements such as digestion and blood vessel contraction.

Actin:

A protein that forms (together with myosin) the contractile filaments of muscle cells, involved in motion and contraction.

Myosin:

A motor protein found in muscle cells that binds to actin in the presence of ATP, playing a crucial role in muscle contraction and movement