Describe the structure and function of lymph nodes by filling in the blanks of t

Question

Describe the structure and function of lymph nodes by filling in the blanks of the following paragraph. (5 marks; 0.5 marks for each blank)

Lymph nodes are ______ lymphatic organs, lying along lymphatic vessels and function as_____ . Lymph vessels upstream of nodes are referred to as _____ vessels, whereas vessels downstream of nodes are called _____ vessels. Internally, the presence of _____ creates one-way flow of lymph through nodes. _____ fibers, located in the spaces between nodal cells, trap foreign substances. The four types of cells within nodes include: ______.

Explanation / Answer

Answer:

Lymph nodes are primary lymphatic organs, lying along lymphatic vessels and function as lymph filters and immune surveillence units. Lymph vessels upstream of nodes are referred to as afferent vessels, whereas vessels downstream of nodes are called efferent vessels. Internally, the presence of one-way valves creates one-way flow of lymph through nodes. Reticular fibers, located in the spaces between nodal cells, trap foreign substances. The four types of cells within nodes include: T-cells, Reticular cells, Macrophages, Antigen Presenting Cells (APCs).

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