Two hearts, said Keats, can beat as one; but a study led by Weizmann Institute scientists in collaboration with researchers from the University of Pennsylvania shows that sometimes a single heart ...

An electron microscopy study revealed key details of actin filaments, which are essential structural elements of cells and muscles. Actin filaments -- protein structures critical to living movement ...

This is a preview. Log in through your library . Abstract The variation in thin filament length was investigated in slow and fast muscle from adult and neonatal rats. Soleus (slow) muscle from adult, ...

Smooth muscle cells use an actin-myosin II-based contractile apparatus to produce force for a variety of physiological functions, including blood pressure regulation and gut peristalsis. The ...

Using muscle tissue from tarantulas, an HHMI international research scholar and his colleagues have figured out the detailed structure and arrangement of the miniature molecular motors that control ...

TALLAHASSEE, Fla. -- Scientists peering into the beating heart have solved a decades-old, fundamental mystery about how the heart works. The revelation could herald the development of new treatments ...

Watching the elaborate motion of a pitcher throwing a baseball at more than 100 miles an hour illustrates the essential role of stretching prior to delivering large amounts of mechanical power.

Each heart muscle cell consists of numerous parallel filaments comprising repeated subunits. When the heart beats, each individual filament contracts to produce muscle cell contractions. However, new ...