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.
Plantain leaf can be made into a tea, tincture or infusion and used internally (according to Practical Herbalism): 1  To help get Cholesterol to healthy Levels. 2  To aid those with Diabetes. 3  For Hemorrhoid relief. 4  To help relieve Irritable Bowel Syndrome. 5  To help calm the bowels during Constipation or Diarrhea.