In your own words, explain what the lymphatic system does. In your answer, include lymphatic capillaries, vessels, ducts, lymph nodes, and other lymphatic tissues. Tell the whole story. Optional: include the details on the roles of B lymphocytes.
Starting from the air in the atmosphere, trace the pathway of an O2 (oxygen) molecule all the way to a skeletal muscle fiber in the semitendinosus muscle. Include all the structures, passageways, organs, and processes that are involved. The complete answer will contain both the respiratory and cardiovascular systems. Go deep.
What is the difference between external and internal respiration? Describe each process in detail.