BIOL 121 CHAPTER 22 THE CARDIOVASCULAR SYSTEM VESSELS AND CIRCULATION

BIOL 121 CHAPTER 22 THE CARDIOVASCULAR SYSTEM VESSELS AND CIRCULATION Human Anatomy, 7e (Martini/Timmons/Tallitsch) Chapter 22 The Cardiovascular System: Vessels and Circulation 1) The total length of blood vessels in the body is estimated to be A) 30 feet. B) 1 mile. C) thousands of miles. D) over a million miles. E) None of the answers are correct. 2) Blood vessels, in correct order from the largest to the smallest, are: (1) capillaries (2) aorta (3) elastic arteries (4) arterioles (5) muscular arteries A) 1, 2, 3, 4, 5 B) 5, 4, 3, 2, 1 C) 2, 5, 3, 4, 1 D) 1, 3, 5, 2 or 1 E) 5, 3, 2 or 4, 1 3) The outermost layer of a blood vessel, which is very thick, composed chiefly of collagen fibers, with scattered bands of elastic fibers is the A) media. B) intima. C) external elastic membrane. D) adventitia. E) internal elastic membrane. 4) Which of the following applies to elastic arteries? A) These vessels distribute blood to the skeletal muscles and internal organs of the body. B) They have a poorly defined adventitia. C) The media of these arteries contains a high density of elastic fibers and relatively few smooth muscle cells. D) The media consists of scattered smooth muscle fibers that do not form a complete layer. E) None of the answers are correct. 5) Muscular arteries A) are larger than elastic arteries and smaller than arterioles. B) serve as the cushion to prevent sudden rises in blood pressure from causing trouble for the circulation. C) are exemplified by the aorta. D) have a thick media with a large amount of smooth muscle fiber within them. E) None of the answers are correct.