6 notecards = 2 pages (4 cards per page)
List the functions of the lymphatic vessels.
The function of the lymphatic vessels, or lymphatics, is an elaborate system of drainage vessels that collect the excess protein-containing interstitial fluid and return it to the bloodstream.
Describe the structure and distribution of lymphatic vessels.
• The lymphatic collecting vessels have the same three tunics as veins, but the collecting vessels are thinner walled, have more internal valves, and anastomose more.
Describe the source of lymph and mechanism(s) of lymph transport.
Once interstitial fluid enters lymphatics, it is called lymph
Describe the basic structure and cellular population of lymphoid tissue. Differentiate between diffuse and follicular lymphoid tissues.
Lymphoid (lymphatic) tissue is an important component of the immune system, mainly because it
Describe the general location, histological structure, and functions of lymph nodes.
• Nodes cluster along the lymphatic vessels of the body. Large clusters of lymph nodes occur near the body surface in the inguinal, axillary, and cervical regions, places where the lymphatic collecting vessels converge to form trunks
Name and describe the other lymphoid organs of the body. Compare and contrast them with lymph nodes, structurally and functionally.
• Spleen is about the size of a fist and is the largest lymphoid organ. The spleen provides a site for lymphocyte proliferation and immune surveillance and response. Important are its blood-cleansing functions. Besides extracting aged and defective blood cells and platelets from the blood, its macrophages remove debris and foreign matter from blood flowing through its sinuses. The spleen also performs three additional, and related, functions.