What Is bulk REO? Bulk REO is when a lender has so many repossessed properties that it decides to sell them in bulk to investors. The government-sponsored agencies, Fannie Mae and Freddie Mac, as well as the FHA (Federal Housing Administration) have sold REO's in bulk, as have several of the largest banks.
Thick Filaments and its purpose. Thick filaments in a muscle fiber are made of many molecules of the protein myosin. Each myosin molecule has a fibrous tail region and a globular head. For clarity, only one head is shown here. Thin filaments are twisted chains made of the globular protein actin.
This process is known as the sliding filament model. The binding of the myosin heads to the muscle actin is a highly regulated process. The thin filament is made of actin, tropomyosin, and troponin. The contraction of skeletal muscle is triggered by nerve impulses that in turn stimulate the release of Ca 2+ . The release of Ca 2+ from the sarcoplasmic reticulum causes an increase in the concentration of Ca 2+ in the cytosol.