Capillary

The definition of capillary is central to understanding various biological, physical, and chemical processes that involve the movement of liquids in narrow spaces. A capillary is generally defined as a small tube or vessel through which liquids can flow, often influenced by surface tension and adhesive forces. In biology, capillaries are the tiniest blood vessels … Read more

The Hess capillary fragility test is a classic clinical examination used in the evaluation of blood vessel integrity and platelet function. While modern laboratory techniques such as platelet counts and bleeding time tests have largely replaced it, this test still holds historical and educational value in understanding how physicians once assessed vascular resistance. The principle … Read more