Anatomy & Physiology
3rd Edition
ISBN: 9781259398629
Author: McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher: Mcgraw Hill Education,
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Chapter 20.5, Problem 19WDL
How is the pressure gradient to move blood through the systemic circulation calculated? What is the significance of this pressure gradient?
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The effective-refractory period present during Phase 2 of the actionpotential of ventricular myocytes:A)is relatively long because the Na+ current does not inactivate. B) is relatively long because K+ current is immediately activated once membrane potential becomes positive. C) prevents tetanus in the heart. D) is about twice as long as in skeletal muscle
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Chapter 20 Solutions
Anatomy & Physiology
Ch. 20.1 - Prob. 1LOCh. 20.1 - Prob. 2LOCh. 20.1 - What are three differences in anatomic structure...Ch. 20.1 - Prob. 3LOCh. 20.1 - Prob. 2WDLCh. 20.1 - Prob. 4LOCh. 20.1 - Prob. 5LOCh. 20.1 - Prob. 6LOCh. 20.1 - What type of capillary is the most permeable, and...Ch. 20.1 - Prob. 7LO
Ch. 20.1 - Prob. 8LOCh. 20.1 - How does a vein serve as a blood reservoir?Ch. 20.1 - Prob. 9LOCh. 20.1 - Prob. 5WDLCh. 20.2 - Prob. 10LOCh. 20.2 - Prob. 11LOCh. 20.2 - In which type of vessel is blood flow the slowest?...Ch. 20.3 - Prob. 12LOCh. 20.3 - What substances are transported by diffusion...Ch. 20.3 - Prob. 13LOCh. 20.3 - Prob. 14LOCh. 20.3 - Prob. 8WDLCh. 20.3 - Prob. 15LOCh. 20.3 - Prob. 16LOCh. 20.3 - Prob. 1WDTCh. 20.3 - How does the hydrostatic pressure change from the...Ch. 20.3 - Which two pressures have the largest values?...Ch. 20.3 - Prob. 17LOCh. 20.3 - If these lymph vessels were nonfunctional, what...Ch. 20.4 - Prob. 18LOCh. 20.4 - Prob. 19LOCh. 20.4 - In what ways is angiogenesis stimulated in...Ch. 20.4 - Prob. 20LOCh. 20.4 - Prob. 13WDLCh. 20.4 - Prob. 21LOCh. 20.4 - Prob. 22LOCh. 20.4 - Prob. 23LOCh. 20.4 - What relationship exists between metabolic...Ch. 20.4 - Prob. 24LOCh. 20.4 - Prob. 15WDLCh. 20.5 - Prob. 25LOCh. 20.5 - Prob. 26LOCh. 20.5 - Prob. 27LOCh. 20.5 - Prob. 28LOCh. 20.5 - Prob. 16WDLCh. 20.5 - Prob. 17WDLCh. 20.5 - How is the small pressure gradient in veins...Ch. 20.5 - How is the pressure gradient to move blood through...Ch. 20.5 - Prob. 29LOCh. 20.5 - How is resistance defined?Ch. 20.5 - What are the three factors that alter resistance?...Ch. 20.5 - Prob. 30LOCh. 20.5 - Prob. 31LOCh. 20.5 - Prob. 22WDLCh. 20.6 - Prob. 32LOCh. 20.6 - LEARNING OBJECTIVE
33. Explain the autonomic...Ch. 20.6 - Prob. 2WDTCh. 20.6 - Prob. 23WDLCh. 20.6 - What is the initial change to blood pressure when...Ch. 20.6 - Prob. 34LOCh. 20.6 - Prob. 35LOCh. 20.6 - Prob. 36LOCh. 20.6 - Prob. 3WDTCh. 20.6 - Prob. 25WDLCh. 20.6 - Prob. 26WDLCh. 20.7 - Prob. 37LOCh. 20.7 - Which organs have an increased proportion of...Ch. 20.8 - Prob. 38LOCh. 20.8 - Prob. 28WDLCh. 20.8 - Prob. 39LOCh. 20.8 - Prob. 29WDLCh. 20.9 - Prob. 40LOCh. 20.9 - Prob. 30WDLCh. 20.9 - Prob. 41LOCh. 20.9 - Prob. 31WDLCh. 20.10 - Prob. 42LOCh. 20.10 - Prob. 43LOCh. 20.10 - LEARNING OBJECTIVE
44. Describe the general...Ch. 20.10 - Prob. 32WDLCh. 20.10 - Prob. 33WDLCh. 20.10 - Prob. 45LOCh. 20.10 - Prob. 46LOCh. 20.10 - Prob. 47LOCh. 20.10 - Prob. 34WDLCh. 20.10 - LEARNING OBJECTIVE
48. Describe the vessels that...Ch. 20.10 - What are the systemic arteries that supply...Ch. 20.10 - Prob. 49LOCh. 20.10 - Prob. 50LOCh. 20.10 - Prob. 51LOCh. 20.10 - Prob. 36WDLCh. 20.10 - Prob. 37WDLCh. 20.10 - Prob. 52LOCh. 20.10 - Prob. 53LOCh. 20.10 - Prob. 38WDLCh. 20.11 - LEARNING OBJECTIVE
54. Trace the arteries of the...Ch. 20.11 - Prob. 55LOCh. 20.11 - Prob. 4WDTCh. 20.11 - Prob. 39WDLCh. 20.11 - Prob. 40WDLCh. 20.11 - Prob. 56LOCh. 20.11 - LEARNING OBJECTIVE
57. Compare and contrast the...Ch. 20.11 - Prob. 41WDLCh. 20.11 - Prob. 42WDLCh. 20.12 - Prob. 58LOCh. 20.12 - List the five structures of fetal circulation, and...Ch. 20.12 - Prob. 59LOCh. 20.12 - Prob. 44WDLCh. 20 - Prob. 1DYBCh. 20 - _____ 2. Which statement is accurate about veins?...Ch. 20 - _____ 3. Vasa vasorum are found in the tunica...Ch. 20 - _____ 4. Which of the following decreases...Ch. 20 - 5. A(n) __________ is a type of vessel with the...Ch. 20 - _____ 6. An increase in _____ will result in an...Ch. 20 - Prob. 7DYBCh. 20 - _____ 8. Velocity of blood flow is the slowest in...Ch. 20 - _____ 9. Blood pressure is regulated by the a....Ch. 20 - _____ 10. Name the correct pathway that blood...Ch. 20 - Prob. 11DYBCh. 20 - Prob. 12DYBCh. 20 - Explain the difference between hydrostatic and...Ch. 20 - Write the formula for determining net filtration...Ch. 20 - Prob. 15DYBCh. 20 - Prob. 16DYBCh. 20 - Briefly explain how changes in cardiac output,...Ch. 20 - Compare how the cardiac center and vasomotor...Ch. 20 - Prob. 19DYBCh. 20 - What postnatal changes occur in the heart and...Ch. 20 - If a patient has cirrhosis of the liver and is...Ch. 20 - Prob. 2CALCh. 20 - Prob. 3CALCh. 20 - Prob. 4CALCh. 20 - Prob. 5CALCh. 20 - Prob. 1CSLCh. 20 - Arteries tend to have a lot of vascular...Ch. 20 - Explain why an overweight individual with high...
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- What are the relative velocities of flow through the various vessel types of the systemic circulation?arrow_forwardWhat is the clinical significance of pulse pressure?arrow_forwardThe exact cause of blood clotting in the left atrium of the heart during atrial fibrillation (AF) is not known. In part it might be due to blood stasis (not moving) or it may result in combination with endothelial cells damage. (A) What are the potential mechanisms that might drive clotting and what markers might you look for in the blood to predict potential risk? (B) Other than treating the arrhythmia, what other pharmacological intervention might be provided to AF sufferers?arrow_forward
- How is local control of blood flow in tissues achieved?arrow_forwardWhat is the relationship between peripheral resistance and blood pressure? How does the vasomotor center control peripheral resistance?arrow_forwardThe aorta is the principal blood vessel through which blood leaves the heart in order to circulate around the body. (a) Calculate the average speed of the blood in the aorta if the flow rate is 5.0 L/min. The aorta has a radius of 10 mm. (b) Blood also flows through smaller blood vessels known as capillaries. When the rate of blood flow in the aorta is 5.0 L/min, the speed of blood in the capillaries is about 0.33 mm/s. Given that the average diameter of a capillary is 8.0 μm (1 μm = 1 X 10 –6 m), calculate the number of capillaries in the blood circulatory system.arrow_forward
- What is the importance and the physiology of the cardiac conduction system?arrow_forwardMake a complete blood flow tracing using the illustration: a) from the caudal fin tail and back to the heart b) from the intestine, back to the heart, to the urinary bladderarrow_forwardDescribe the action potential of an autorhythmic cell in the heart.a) Indicate how the opening and closing of each ion channel affects the membrane potential of the cell.b) Provide one similarity between the action potential of an autorhythmic cell and the action potential of a neuron.c) Provide one difference between the action potential of an autorhythmic cell and the action potential of a neuron.arrow_forward
- What term is used to describe normal, quite blood flow?arrow_forward1.The effective-refractory period present during Phase 2 of the action potential of ventricular myocytes: A)is relatively long because the Na+ current does not inactivate. B) is relatively long because K+ current is immediately activated once membrane potential becomes positive. C) prevents tetanus in the heart. D) is about twice as long as in skeletal muscle 2.Which of the following promotes reabsorption of water into the capillary? A)Plasma oncotic pressure B)Capillary hydrostatic pressure C)Interstitial fluid oncotic pressure D)Soluble electrolytes E)Red blood cells.arrow_forwardWhat is the only solute that has a significant concentration difference across the capillary wall? How does this difference influence water concentration?arrow_forward
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