What is the main function of the lymphatic capillaries?

Lymphatic capillaries are the smallest and most numerous vessels in the lymphatic system and play a crucial role in absorbing and transporting lymph throughout the body. They are formed by thin-walled, flexible vessels that are located in the spaces between cells and allow fluid to enter but prevent it from escaping. By collecting and returning excess fluid to the bloodstream, the lymphatic capillaries help maintain fluid balance and prevent swelling (edema) in the body.