Final answer:
The presence of lymphatic capillaries does not facilitate the entry of lymph, as they are only the structural endpoints of the system. It is the lymphatic valves, pressure changes, and muscular contractions that actively assist lymph entry and movement.
Step-by-step explanation:
The entry of lymph into the lymphatic capillaries is facilitated by mechanisms such as lymphatic valves, pressure changes in the lymphatic vessels, and the contraction of skeletal muscles. However, the mere presence of lymphatic capillaries does not facilitate the entry of lymph. Instead, they represent the open end of the system that allows interstitial fluid to flow into them.
Lymphatic valves function to prevent backflow, ensuring that there is a one-way flow of lymph. Additionally, external forces such as the contraction of skeletal muscles during body movements play a significant role in lymph movement. Changes in pressure within the lymphatic vessels also contribute to the movement of lymph. However, the presence of lymphatic capillaries is merely a structural fact and does not actively enhance the movement of lymph—other factors do this.