Chapter 30: Circulation of the Blood Patton: Anatomy and Physiology, 10th Edition Exam|Questions and Answers| 100% Correct

Chapter 30: Circulation of the Blood Patton: Anatomy and Physiology, 10th Edition Exam|Questions and Answers| 100% Correct 1. All of the following will increase heart rate except: a. sympathetic stimulation. b. a decrease in aortic blood pressure. c. a decrease in carotid blood pressure. d. stimulation of cold receptors in the skin. d. stimulation of cold receptors in the skin. 2. Which of the following is not true of the baroreceptors? a. They are stretch receptors. b. They are sensitive to changes in the oxygen content of the blood. c. They send afferent nerve impulses to the cardiac control centers. d. They are located in the carotid sinus and the aorta. b. They are sensitive to changes in the oxygen content of the blood. 3. Which of the following factors increases heart rate? a. Sudden, intense pain of visceral organs such as the intestines and the gallbladder b. Stimulation of skin receptors by cold c. Anxiety and fear d. Grief c. Anxiety and fear 4. Peripheral resistance is affected primarily by: a. the length of myocardial fibers. b. blood viscosity and the diameter of arterioles. c. the capacity of the blood reservoirs. d. elasticity of the heart. b. blood viscosity and the diameter of arterioles. 5. Which of the following is not a mechanism that increases blood volume and therefore venous return of blood to the heart? a. Antidiuretic hormone b. Aldosterone c. Atrial natriuretic hormone d. Renin-angiotensin mechanism c. Atrial natriuretic hormone 6. Which of the following is not a true statement about cardiac output? a. It can be calculated by dividing the stroke volume by the heart rate. b. It is the amount of blood that flows out of a ventricle per unit of time. c. In can be computed by using Fick's Formula. d. All of the above are true statements about cardiac output. c. In can be computed by using Fick's Formula. 7. The primary fluid flow principle of circulation is based on all of the following except a fluid: a. flows only when a pressure gradient is absent. b. does not flow when the pressure is the same in all parts of it. c. flows only when its pressure is higher in one area than in another. d. flows always from its higher-pressure area toward its lower-pressure area. a. flows only when a pressure gradient is absent 8. An increase in heart rate tends to increase: a. cardiac output. b. arterial blood volume. c. blood pressure. d. all of the above. d. all of the above. 9. Cardiac output is determined by the: a. return of blood to the heart and the heart rate. b. strength of contraction of the left ventricle. c. stroke volume and heart rate. d. systolic discharge and stroke volume. c. stroke volume and heart rate. 10. Which of the following statements is true regarding local control of arterioles? a. Local vasodilation is also referred to as active hyperemia. b. Nitric oxide causes vasoconstriction. c. Endothelin causes vasodilation. d. All of the above statements are true regarding local control of arterioles. a. Local vasodilation is also referred to as active hyperemia. 11. The Fick formula is used for determining: a. cardiac output. b. blood vessel resistance. c. mean pressure of the arteries. d. cardiac cycle. a. cardiac output. 12. The greatest resistance to blood fl