Along the inferior surface of the liver are several structures that collectively resemble the letter H. The and the round ligament of the liver form the vertical superior parts of the H; the inferior vena cava and the ligamentum form the vertical inferior parts.

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?