Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 41, Problem 5TY
Summary Introduction
Introduction:
Hemorrhage is the loss of blood from a damaged blood vessel. It may decrease oxygen and nutrient delivery to the cells. Blood volume and blood pressure are closely related and directly proportional to each other. Cardiac output is the volume of blood pumped from the heart per minute. Cardiac output or CO is also directly proportional to the blood pressure.
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- 3. During heavy exercise, the total cardiac output may increase as much as A. 2-fold B. 4-fold C. 6-fold D. 8-foldarrow_forwardIn the same BP measurement= 120/80, what is the arterial pressure when the left ventricle is at the peak of its contraction? Choices: 120804093arrow_forwardSystemic blood pressure is defined as the ratio of two pressures—systolic and diastolic—both expressed in millimeters of mercury. Normal blood pressure is about 120mm/80mm which is usually just stated as 120/80. What would normal systemic blood pressure be if, instead of millimeters of mercury, we expressed pressure in each of the following units, but continued to use the same ratio format? Part A) atmosheres = a)120/ 80 b) 2.32/ 1.54 c) 0.158/ 0.105 d) 1.60x10^4/ 1.06x10^4 Part B) torr = a) 120/ 80 b) 2.32/ 1.54 c) 0.158/ 0.105 d) 1.60x10^4/ 1.06x10^4 Part C) Pa = a)120/ 80 b) 2.32/ 1.54 c) 0.158/ 0.105 d) 1.60x10^4/ 1.06x10^4 Part D) N/ m^2 = a)120/ 80 b) 2.32/ 1.54 c) 0.158/ 0.105 d) 1.60x10^4/ 1.06x10^4 Part E) psi = a)120/ 80 b) 2.32/ 1.54 c) 0.158/ 0.105 d) 1.60x10^4/ 1.06x10^4arrow_forward
- Sue goes to the gym and after an initial warm-up, she increases her exercise level pushing herself to maximum. At this point her heart rate is 175 beats/min and her stroke volume is 135 ml/beat. What is her cardiac output now? At this point, by how many ml/min has her CO increased over her resting CO? What % increase over resting is this? (Use the following equation). amount of increase in CO in ml/min % increase = _____________ X 100% original CO (resting) ml/min What term is used to describe this increase in CO?arrow_forwardIf stroke volume is 0.1 liters and heart rate is 100 beats per min, what is cardiac output? Group of answer choices 100 liters per min 10 liters per min 1000 liters per min 5 liters per minarrow_forwardA 150-lb adult has approximately 9 pints of blood. If a drop of blood has a volume of 0.05 mL, how many drops of blood does the adult individual have? The final answer is to be expressed in 3 significant figures. Note: 1 liter = 2.11 pints; 1 L = 1,000 mLarrow_forward
- Calculate %HRR for an individual (63 years old) who has a heart rate of 140 during running. The resting heart rate of this individual is 60 (HRmax= 208-0.7* age).arrow_forwardIlike Running is training for a marathon. While training, his volume of air in each breath is 1.5 L and he takes approximately 15 breaths per minute. His total lung capacity is 5500 mL and his residual volume is 1500 mL. Ilike has a blood pH of 7.2 and his cardiac output is 4.95 L/min. His heart is pumping 172 times per minutes. Finally, his expiratory reserve volume is 750 mL. In order to increase his performance, Ilike wants an analysis of his current exercise values. Please determine the following based on the information listed above. Answe the following Blank 1: Tidal Volume Blank 2: Vital Capacity Blank 3: Ventilation Blank 4: Stroke Volume Blank 5: Inspiratory Reserve Volume:arrow_forwardlike Running is training for a marathon. While training, his volume of air in each breath is 1.5 L and he takes approximately 15 breaths per minute. His total lung capacity is 5500 mL and his residual volume is 1500 mL. Ilike has a blood pH of 7.2 and his cardiac output is 4.95 L/min. His heart is pumping 172 times per minutes. Finally, his expiratory reserve volume is 750 mL. In order to increase his performance, Ilike wants an analysis of his current exercise values. Please determine the following based on the information listed above. Blank 1: Tidal Volume Blank 2: Vital Capacity Blank 3: Ventilation Blank 4: Stroke Volume Blank 5: Inspiratory Reserve Volume:arrow_forward
- What is the cardiac output of a heart when the heartbeat rate is 60 beat.min-1, the diastolic pressure in the aorta is 80 mm Hg, and the stroke volume is 80 mL.beat-1? A. 4,800 mm Hg.min-1 B. 6,400 mL.mm Hg-1 C. 4,800 mL.min-1 D. 1.33 mL.beat-1 E. 0.75 mL.min-1arrow_forward.List the abbreviations and normal ranges of the following computed hemodynamic values: stroke volume, stroke volume index, cardiac index,?arrow_forwardEstimate the volume of a human heart (in mL) using the following measurements/assumptions: Blood flow through the aorta is approximately 16.8 cm/s. The diameter of the aorta is approximately 3.0 cm. Assume the heart pumps its own volume with each beat. Assume a pulse rate of 90 beats per minute.arrow_forward
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