Which of the following is the rhythmic pressure against the walls of an artery caused by contraction of the heart?

Which of the following is lower chambers of the heart? 

Which of the following refers to working in opposition to each other? 

Which of the following is not one of the three (3) main functions of the lymphatic system? 

Which of the following is the describes the term proliferation? 

The highly contagious sexually transmitted disease caused by the spirochete Treponema pallidum is:

Which of the following is the abnormal protrusion of the bicuspid valve resulting in the inability for it to completely close?

At the top of your selected peer-reviewed journal article, which icon should you select from the navigation bar at the top in order to locate the source citation in MLA style that will go on your Works Cited page?

Which of the following two terms describe the narrow tubes that lead from the middle ear to the nasal cavity and the throat?     

Which of the following is not a valve controlling the flow of blood through the heart?