BIOL 121 CHAPTER 21 THE CARDIOVASCULAR SYSTEM THE HEART

BIOL 121 CHAPTER 21 THE CARDIOVASCULAR SYSTEM THE HEARTBIOL 121 CHAPTER 21 THE CARDIOVASCULAR SYSTEM THE HEART Human Anatomy, 7e (Martini/Timmons/Tallitsch) Chapter 21 The Cardiovascular System: The Heart 1) The ability of the blood to supply oxygen and remove carbon dioxide from the tissues depends upon A) the diameter of the capillaries. B) the number of white blood cells in the circulation. C) the ability of the blood to remain in constant motion. D) the rate at which platelets are manufactured. E) the osmotic balance, as controlled by the kidneys. Answer: C 2) Blood that is transported to and from all of the tissues of the body with the exception of the lungs is in the A) arterial circuit. B) pulmonary circuit. C) systemic circuit. D) portal circuit. E) venous circuit. Answer: C 3) Blood vessels traveling away from the heart are A) arterioles. B) venules. C) capillaries. D) arteries. E) All of the answers are correct. Answer: D 4) The heart has the unique ability to change its workload. On average the heart can pump between ________ and ________ liters of blood per minute. A) 2; 20 B) 1; 3 C) 10; 20 D) 5; 50 E) 5; 30 Answer: E 5) The serous membrane lining the pericardial cavity is the A) pleura. B) mediastinum. C) pericardium. D) myocardium. E) endocardium. Answer: C