In laminar flow, where are lower flow frequencies typically found?

In laminar flow, the flow profile is characterized by smooth, constant movement of fluid in parallel layers, with different velocities throughout the cross-section of the vessel. The highest velocities are typically found in the centerstream, where the fluid moves with the least resistance. As the fluid moves closer to the vessel walls, it encounters friction from the wall itself, which slows down the flow. This creates a velocity gradient, resulting in lower flow frequencies near the vessel walls.

The presence of lower flow frequencies in these areas is critical for understanding how blood moves through vessels and how it behaves under different conditions, as it can affect factors such as pressure, flow continuity, and the potential for turbulence if the flow reaches a critical velocity. Understanding these dynamics is essential for assessing vascular health and diagnosing potential issues.