Скачать или смотреть Lymphatics lesson 2, Lymph nodes and efferent lymphatic vessels

Part 2 of the introductory lesson on the lymphatic system, with a focus on the nature and purpose of lymph nodes and the nature of lymphatic circulation.

Afferent lymphatic vessels transport lymphatic fluid towards lymph nodes.

Lymphatic capillaries drain into progressively larger lymphatic vessels. These
lymphatic vessels have valves to ensure one way flow of the lymphatic fluid (or
lymph) away from the tissues and towards the lymph nodes. In this respect they
have a drainage function similar to veins, although lymphatic vessels have more
valves and thinner walls. As lymphatic vessels may drain bacteria from a site of
tissue infection, it is sometimes possible to see 'tracking' of inflammation along
the line of a lymphatic vessel. This is a classical clinical feature and may indicate
spread of the infection.