Wing dam in a man-made river bed. A wing dam or wing dike is a manmade barrier that, unlike a conventional dam, only extends partway into a river. These structures force water into a fast-moving center channel which reduces the rate of sediment accumulation while slowing water flow near the riverbanks.
Each foot is made up of 28 bones, 30 joints and more than 100 muscles, tendons and ligaments, all of which work together to provide support, balance and mobility. Here's a look at the main structures of the feet. Bones. Nearly one-fourth of the body's bones are in our feet.The bones of the feet are:1  Talus â the bone on top of the foot that forms a joint with the two bones of the lower leg, the tibia and fibula. 2  Calcaneus â the largest bone of the foot, which lies beneath the talus to form the heel bone.ones. Nearly one-fourth of the body's bones are in our feet. The bones of the feet are: 1  Talus â the bone on top of the foot that forms a joint with the two bones of the lower leg, the tibia and fibula. 2  Calcaneus â the largest bone of the foot, which lies beneath the talus to form the heel bone.
Human foot consists of 26 bones (Calcaneus, Talus, Navicular, Cuboid, 3 cunieforms, 5 metatarsals, 14 phalanges). Under the big toe joint there are 2 bone called the sesamoids which play an important role in the function of the big toe joint.There are small bones (ossicles) that form infrequently in the foot. These small bones are called accessory bones of the foot or accessory ossicles of the foot.Although accessory bones are uncommon, some are seen more common in general population.uman foot consists of 26 bones (Calcaneus, Talus, Navicular, Cuboid, 3 cunieforms, 5 metatarsals, 14 phalanges). Under the big toe joint there are 2 bone called the sesamoids which play an important role in the function of the big toe joint.