How do synovial joints receive their nutrition?

The correct method by which synovial joints receive their nutrition is through diffusion from surrounding tissues. Synovial joints lack a direct blood supply within the cartilage itself; instead, they depend on the surrounding tissue fluids for nutrients. The cartilage in synovial joints is avascular, meaning it does not have its own blood vessels. As a result, it absorbs nutrients from synovial fluid and surrounding connective tissues through the process of diffusion. This allows essential nutrients to permeate the cartilage and keep it healthy, which is critical for maintaining joint function and reducing the risk of degeneration.

Other options, such as a direct blood supply or synovial fluid absorption as the primary means of nutrition, do not accurately describe the physiological processes involved in how synovial joints maintain their function. While synovial fluid plays a role in lubrication and cushioning during movement, it is not the sole source of nutrition for the cartilage. Inhibition does not pertain to the nutritional aspect of joint function. Understanding these mechanisms emphasizes the importance of joint health and the need for proper movement to facilitate nutrient flow to maintain cartilage integrity.