Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 4CYR
Which of the following factors would increase peripheral resistance?
a. Increased blood viscosity
b. Shorter vessel
c. Vasodilation
d. An increase in vessel radius
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If a vessel were to dilate to twice its previous radius, and if pressure remained constant, blood flow through this vessel would a.increase by a factor of 16. b.increase by a factor of 4. c.increase by a factor of 2. d.decrease by a factor of 2.
a calcium channel blocker or an antagonist drug will produce
a. vasoconstriction
b. increase in blood pressure
c. increase in total peripheral resistance
d. reduction in cardiac muscle contractility
Which of the following best describes the primary role of resistance vessels?
Group of answer choices
a.Providing nutrient supply to the walls of larger vessels
b. They regulate arterial blood pressure and blood flow within the organs.
c. Ensuring blood storage during periods of low cardiac output
d. Directing blood flow to specific organs based on demand
Chapter 18 Solutions
Human Anatomy & Physiology
Ch. 18.1 - Define the three types of blood vessels in the...Ch. 18.1 - Prob. 2QCCh. 18.1 - Prob. 3QCCh. 18.1 - Prob. 4QCCh. 18.1 - Prob. 5QCCh. 18.1 - 6. How do veins differ structurally and...Ch. 18.1 - Prob. 7QCCh. 18.1 - What are venous valves, and what are their...Ch. 18.1 - Prob. 9QCCh. 18.2 - Prob. 1QC
Ch. 18.2 - Prob. 2QCCh. 18.2 - Prob. 3QCCh. 18.2 - Prob. 4QCCh. 18.2 - Prob. 5QCCh. 18.2 - Prob. 6QCCh. 18.2 - 7. How does mean arterial pressure differ from...Ch. 18.2 - Prob. 8QCCh. 18.2 - Prob. 9QCCh. 18.3 - Prob. 1QCCh. 18.3 - Prob. 2QCCh. 18.3 - Prob. 3QCCh. 18.3 - Prob. 4QCCh. 18.3 - Prob. 5QCCh. 18.3 - Prob. 6QCCh. 18.3 - Prob. 7QCCh. 18.3 - 8. What is circulatory shock, and why is it...Ch. 18.4 - Describe the structure and size of a typical...Ch. 18.4 - 2. List three ways in which substances may cross...Ch. 18.4 - 3. Describe the properties of the three types of...Ch. 18.4 - 4. What is tissue perfusion?
Ch. 18.4 - Prob. 5QCCh. 18.4 - Prob. 6QCCh. 18.4 - Prob. 7QCCh. 18.4 - Prob. 8QCCh. 18.4 - Prob. 9QCCh. 18.5 - What is hydrostatic pressure? How does hydrostatic...Ch. 18.5 - 2. In which direction does the hydrostatic...Ch. 18.5 - Prob. 3QCCh. 18.5 - Prob. 4QCCh. 18.5 - Where in the capillary does net filtration take...Ch. 18.5 - Prob. 6QCCh. 18.6 - List the three branches of the aortic arch.Ch. 18.6 - Prob. 2QCCh. 18.6 - Prob. 3QCCh. 18.6 - Prob. 4QCCh. 18.6 - Which arteries supply the anterior and posterior...Ch. 18.6 - Prob. 6QCCh. 18.6 - Which artery supplies the upper limb?Ch. 18.6 - Trace the arterial supply of the upper limb from...Ch. 18.6 - 9. Which artery supplies the lower limb?
Ch. 18.6 - Trace the arterial supply of the lower limb from...Ch. 18.6 - Prob. 11QCCh. 18.7 - Where do most veins superior to the diaphragm...Ch. 18.7 - Prob. 2QCCh. 18.7 - Where are the dural sinuses located? What drains...Ch. 18.7 - How does drainage of the posterior body wall...Ch. 18.7 - 5. Which abdominal vessels drain straight into...Ch. 18.7 - Prob. 6QCCh. 18.7 - Prob. 7QCCh. 18.7 - Prob. 8QCCh. 18.7 - Prob. 9QCCh. 18.7 - Prob. 10QCCh. 18 - Prob. 1CYRCh. 18 - Locations where vessels connect via collateral...Ch. 18 - Prob. 3CYRCh. 18 - 4. Which of the following factors would increase...Ch. 18 - Which of the following would produce a decrease in...Ch. 18 - Fill in the blanks: The two pressures within the...Ch. 18 - The lowest pressure in the systemic circuit occurs...Ch. 18 - Explain the mechanisms that assist in the return...Ch. 18 - Mark the following statements as true or false. If...Ch. 18 - The carotid sinus contains: a. baroreceptors. b....Ch. 18 - Capillaries consist of: a. three thin tunics. b....Ch. 18 - List three ways in which substances can cross the...Ch. 18 - Which of the following structures is the leakiest?...Ch. 18 - Prob. 14CYRCh. 18 - 15. The hydrostatic pressure gradient drives water...Ch. 18 - Prob. 16CYRCh. 18 - Match the following arteries with the correct...Ch. 18 - Which of the following is not a common pulse...Ch. 18 - 19. Which of the following vessels does not drain...Ch. 18 - Match the following veins with the correct...Ch. 18 - 1. Explain why a severed artery spurts blood,...Ch. 18 - 2. Explain why a person who is 7 feet tall is...Ch. 18 - Prob. 3CYUCh. 18 - Prob. 1AYKACh. 18 - Prob. 2AYKACh. 18 - Predict the effects of each of the following on...Ch. 18 - Prob. 4AYKBCh. 18 - Ms. Rodgers has been diagnosed with secretion of...
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- A patient suffering from hypertension may receive drugs that decrease the hearts output, dilate arterioles, or increase urine production. In each case, how would the drug treatment help relieve hypertension?arrow_forwardMatch the type of blood vessel with its major function. _____ arteriesa. diffusion _____ arteriolesb. control of blood distribution _____ capillariesc. transport, blood volume reservoirs _____ veinsd. blood transport and pressure regulatorsarrow_forwardwhich of the following will increase the total peripheral resistance a. low red blood cell cound b. high platelet count c. tachycardia d. vasoconstrictionarrow_forward
- Which of the following will cause local adjustments in an arteriole’s radius and hence vessel diameter? Select one: a. all of these. b. increased O2 c. increased acid d. decreased O2 e. increased K+arrow_forwardWhich of the following decreases perfusion of a tissue? a. decreased total blood flow b. vasodilator c. angiogenesis d. increased carbon dioxide, decreased pH (increased H+), and low O2arrow_forwardWhich of the following is True?a. Arteriole diameter is controlled by nerves, hormones,and chemicals from nearby tissues.b. The sympathetic nervous systems causes constriction ofarterioles in hot conditions.c. Precapillary sphincters are controlled by the nervoussystem.d. In response to major blood loss, the veins and arteriesincrease in diameter.arrow_forward
- If the diameter of a blood vessel is reduced by two-thirds and the blood pressure remains constant (that is, the blood pressure is unchanging as the diameter is reduced), then the blood flow rate through the vessel will ... A. be reduced by 80/81. B. be reduced by 8/9 since the area of a circle is πr2. C. be reduced by 1/9 since the area of a circle is πr2. D. be reduced by 2/3. E. be unchanged since the blood pressure does not change.arrow_forwardWhich of the choices below best describes the systemic circulation of blood?a. The flow of blood into the right atrium and eventually out of the left ventricle.b. The movement of blood from the pulmonary trunk, through capillaries into the pulmonary veins.c. The movement of blood into the coronary arteries, through capillaries into the coronary sinus.d. The movement of blood from the aorta, through arteries and capillaries and then eventually to the vena cavae.arrow_forwardfunctional injury to endothelial cells would most likely result in which of the following? a. hemorrhage per rhexis b. thrombosis c. hematoma d. hydrothoraxarrow_forward
- Which of the following is NOT involved in short-term regulation of blood pressure? Select one: a. Alteration in blood volume b. Baroreceptor reflex c. Chemoreceptor mechanism d. Adrenal medullary mechanismarrow_forwardContraction of the smooth muscle layers of the arterioles a. increases the frictional resistance to blood flow. b. may be a way of increasing heat exchange through the skin. c. can increase blood flow to an organ. d. All of the choices are correct.arrow_forwardWhich one of the following balloons would provide the best angioplasty results on a concentric, high degree stenosis? a. Transitional balloon. b. Over the wire balloon c. Rapid exchange balloon d. Cutting balloonarrow_forward
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