FIRST PUBLISH OCTOBER 2024
A&P II: Lecture Exam Lymphatic & Immune System
Study Guide Solutions
lymph - Ans:✔✔-The colorless, clear fluid that leaves interstitial space and enters lymphatic vessels is
known as:
-Lipid Absorption (lacteals absorb dietary lipids)
-Immunity (Immune cells respond to pathogens/chemicals encountered)
-Fluid Recovery (absorbs excess plasma proteins & tissue fluid from tissues and returns it to the
bloodstream; 2-4 L/day) - Ans:✔✔-Name the 3 functions of the lymphatic system:
into the subclavian veins - Ans:✔✔-Where does the lymphatic system dump intercelluar fluid?
away - Ans:✔✔-Lymphatic capillaries are closed at one end, meaning they can only move lymph _______
from tissues. They are tethered to surrounding tissue by protein filaments.
high; low - Ans:✔✔-Loose endothelial cells form valve-like flaps that open when interstitial fluid pressure
is ______ and close when it's ______.
large volumes of fluid to enter the lymphatic capillaries - Ans:✔✔-Fluid leaking from blood capillaries
increases interstitial fluid pressure which forces the loose lymphatic endothelial cells apart and allows:
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FIRST PUBLISH OCTOBER 2024
the spleen - Ans:✔✔-This largest lymphatic organ works to protect the body by trapping worn-out red
blood cells; its WBCs help fight off infection and keep pathogens from spreading throughout the body.
edema - Ans:✔✔-If the lymphatic system doesn't properly drain the excess fluid that leaks out of
capillaries, it would build up in the body's tissues and they would swell, this condition is called:
lymph - Ans:✔✔-The flow of _______ is aided by pumps. Skeletal muscle pumps aid flow by the
contraction of skeletal muscle against lymphatic vessles, a thoracic pump aids flow from the thoracic
cavity.
Exercise - Ans:✔✔-__________ increases lymphatic circulation to get rid of infections.
lymph nodes - Ans:✔✔-Small masses of tissue located along the network of lymph vessels that filter out
pathogens and prevent them from entering the blood stream:
lymphatic trunks (drain major portions of the body), collecting ducts (empties into right/left subclavian
veins) - Ans:✔✔-From lymphatic capillaries lymph flows to collecting vessels, into _____________, and
finally into ___________.
red bone marrow and thymus (site where B and T cells are produced and developed) - Ans:✔✔-The
primary lymphatic organs include:
lymph nodes, spleen, tonsils. (sites where T and B cells plus other WBCs reside and work) - Ans:✔✔-The
secondary lymphatic organs include:
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