👉 A pointed fluid, often referred to as a capillary, is a small, thin tube-like structure found in the walls of blood vessels and lymphatic vessels. It is characterized by its pointed or needle-like shape, which allows it to efficiently facilitate the exchange of substances between the blood and surrounding tissues. The walls of capillaries are composed of a single layer of endothelial cells, making them extremely permeable. This unique structure enables the diffusion of nutrients, oxygen, and waste products, as well as the passage of small molecules and cells, playing a crucial role in maintaining tissue health and function.
