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Lymph is the fluid that flows through the lymphatic system, a network of vessels and nodes that returns fluid from the tissues to the blood. Lymph has a similar composition to blood plasma, but varies in content depending on its origin and destination, and performs various roles in immune defense, fat transport and fluid balance.
The lymphatic system is an organ system that is part of the immune system and complementary to the circulatory system. It consists of lymphatic vessels, lymph nodes, lymphoid organs, lymphatic tissue and lymph, and has functions of fluid transport and immune defense.
Lymphatic vessels are thin-walled tubes that carry lymph, a fluid that drains from the tissues and returns to the bloodstream. They have valves, smooth muscle, and adventitia, and are classified as lymph capillaries, collecting lymphatics, afferent lymph vessels, and efferent lymph vessels.
Learn about the scientific terms used by anatomists, zoologists, and health professionals to describe the structure and function of the human body. Find out how to use prefixes, suffixes, and roots to form anatomical words, and how to locate structures according to landmarks and regions.
A body cavity is any space or compartment in an animal body that accommodates organs and structures or contains fluid. Learn about the two main body cavities in humans (dorsal and ventral) and their subdivisions, membranes, and development.
The interstitium is a network of connective tissues and fluid that surrounds cells and organs, and is involved in nutrient transport, signaling, and immune regulation. It can change in volume and composition in health and disease, and is affected by factors such as pressure, permeability, and lymphatic drainage.
The auricle or otic region is the part of the ear that is visible on the outside of the head. It is one of the regions of the facial area, which also includes the forehead, eyes, cheeks, nose, mouth, chin and neck.
The prostate is a male reproductive gland and muscle that produces fluid for semen and controls ejaculation. Learn about its structure, zones, blood supply, lymphatic drainage, and common problems such as enlargement, inflammation, infection, and cancer.