There are two colic flexures, or curvatures in the transverse colon. The pontine flexure is located between these two flexures. These systems, called "flexures", are usually constructed from composite material. Overall, the boundaries of the drainage basins coincide with the axes of uplifted epeirogenic flexures. They were structured with stainless steel beams and polymer flexures as joints. The rover wheels are designed with integral compliant flexures which provide shock absorption during movement. Although other boundaries appear to be monoclinal flexures, faulting is suspected at depth. North-south axes are common in flexures in these rocks. Flexures and elastomeric bearings require no lubrication and, therefore, require less maintenance. The five secondary brain vesicles and associated flexures have formed by the fifth week. The thickest mineralized zones invariably occur at depressions or flexures in the granitic contact. This makes flexures a critical design feature used in optical instrumentation such as interferometers. Flexures are used in place of the hinged bars shown in Figure 1. However, flexures require no lubrication and exhibit very low or no friction. In the field of precision engineering (especially high-precision motion control), flexures have several key advantages.