A&P 2 University Of Memphis -[A&P II] Exam #2 -- Practice Test fully solved

A&P 2 University Of Memphis -[A&P II] Exam #2 -- Practice Test fully solved 1) Which of the following is false regarding blood vessels? a. They are dynamic structures. b. Part of the cardiovascular system. c. Capillaries are the site of gas and nutrient exchange. d. Arteries carry blood away from the heart. e. All of the above are true. - correct answer e. All of the above are true. 2) Which statement(s) is/are true regarding the 3 layers that make blood vessels? a. The tunica media is the dynamic portion of the vessel that will dilate and constrict. b. The tunica intera is composed of one layer of endothelium. c. The tunica externa anchors the blood vessel through elastic and collagen fibers. d. A and B e. A, B, and C - correct answer e. A, B, and C 3) Which is not matched up with a general characteristic? a. Elastic Arteries-> Their recoil from stretching during ventricular systole will help with blood movement. b. Muscular Arteries->Contain a large amount of cardiac muscle in their tunica media. c. Arterioles-> Have the largest influence on overall blood pressure. d. Veins-> Have much thinner walls compared to arteries. e. Metarteriole-> contains a precapillary sphincter that regulates blood flow into a capillary bed. - correct answer b. Muscular Arteries->Contain a large amount of cardiac muscle in their tunica media. 4) What is the benefit of forming an anastomosis? a. Prevents collateral circulation. b. Act as nozzles to regulate the amount of blood that enters capillaries.