Myosin pulls the thin filaments towards the middle on each side, thus shortening the sarcomere and causing contraction. Cross-Bridge Cycling. In the context of muscular contraction, a cross-bridge refers to the attachment of myosin with actin within the muscle cell. All muscle types - whether we're talking about skeletal, cardiac, or smooth - contract by cross-bridge cycling - that is, repeated attachment of actin and myosin within the cell.
Plantain is edible and medicinal, the young leaves are edible raw in salad or cooked as a pot herb, they are very rich in vitamin B1 and riboflavin. The herb has a long history of use as an alternative medicine dating back to ancient times.
Plantains can be used for cooking at any stage of ripeness, and ripe plantain can be eaten raw. As the plantain ripens, it becomes sweeter and its colour changes from green to yellow to black, just like bananas.Green plantains are firm and starchy, and resemble potatoes in flavor.lantains are a major food staple in West and Central Africa (Cameroon and DR Congo), Central America, the Caribbean islands and northern, coastal parts of South America (Colombia, Venezuela, etc.). Their attractiveness as food is that they fruit all year round, making them a reliable all-season staple food.