In adults, the most common food allergies are: 1  Peanuts. 2  Tree nuts. 3  Fish. 4  Crustaceans (such as shrimp, crabs, and lobster). 5  Mollusks (such as clams, oysters, and mussels).6  Fruits.n adults, the most common food allergies are: 1  Peanuts. 2  Tree nuts. 3  Fish. 4  Crustaceans (such as shrimp, crabs, and lobster). 5  Mollusks (such as clams, oysters, and mussels). 6  Fruits.
Sliding filament theory is a model used to explain the mechanism by which muscles contract. The contraction of skeletal muscle, which is what makes movement possible, occurs in three ways.
This process is known as the sliding filament model of muscle contraction because the actin filaments slide over the myosin filaments. The muscular system works with the nervous system to produce the contraction. Neurons (nerve cells) form connections to one or more muscle cells. A chemical, acetylcholine, is released when an impulse is sent which allows the myosin-actin bridge to form.