Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Question
Chapter 44.5, Problem 3C
Summary Introduction
To determine: The cardiac output, if the heart beat per minute is 100 and the stroke volume is 100 mL per stroke.
Introduction: Circulatory system consists of various elements which are required for the transportation of fluid along the whole body. The heart is the “muscular organ” which is located in the chest cavity. It pumps the blood and fulfills the requirement of various body systems. The human heart is differentiated into four chambers: two auricles and two ventricles. Left auricle and ventricles are separated from the right auricle and ventricle by the differentiating wall in between them known as “septum.” It also helps in the removal of
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Students have asked these similar questions
Imagine that you are feeling very anxious as you walk to the podium to deliver a speech. If your heart rate increases to 100 beats per minute and your stroke volume is 100 mL per stroke, what is your cardiac output?
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?
You found this figure in an old physiology textbook, and you are trying to understand it. Please
interpret and explain all the graphs and charts -AND-explain how it all fits together. Use the
back of this page if you need extra room.
Volume (ml)
Pressure (mmHg)
120
100
60
40
80
40
120
20
80
O
EKG
P
Q
Heart
sounds
O
R
S
Wh
①
0.2
→
Systole +
2
Time (seconds)
0.4
T
Artery
Left
ventricle
4
0.6
Pressure changes
0.8
Diastole
P
5
Volume changes
00 250 300,
In particular, consider how the EKG matches up with ventricular contraction. Be sure to explain this.
Chapter 44 Solutions
Biology (MindTap Course List)
Ch. 44.1 - Types of Circulatory Systems Contrast internal...Ch. 44.1 - Compare how oxygen is transported to the body...Ch. 44.1 - Prob. 2CCh. 44.1 - What are five functions of the vertebrate...Ch. 44.2 - Prob. 2LOCh. 44.2 - Summarize the sequence of events involved in blood...Ch. 44.2 - Prob. 1CCh. 44.2 - Prob. 2CCh. 44.2 - Prob. 3CCh. 44.3 - Prob. 4LO
Ch. 44.3 - Prob. 1CCh. 44.3 - Prob. 2CCh. 44.4 - Prob. 5LOCh. 44.4 - Prob. 1CCh. 44.5 - Prob. 6LOCh. 44.5 - Prob. 7LOCh. 44.5 - Prob. 8LOCh. 44.5 - Prob. 1CCh. 44.5 - PREDICT A patients mitral valve (left AV valve)...Ch. 44.5 - Prob. 3CCh. 44.6 - Prob. 9LOCh. 44.6 - Prob. 1CCh. 44.6 - Prob. 2CCh. 44.7 - Prob. 10LOCh. 44.7 - Prob. 1CCh. 44.7 - Prob. 2CCh. 44.8 - Prob. 11LOCh. 44.8 - Prob. 1CCh. 44.8 - Prob. 2CCh. 44.9 - Trace the progression of atherosclerosis and...Ch. 44.9 - Prob. 1CCh. 44.9 - Prob. 2CCh. 44 - Which of the following are most closely associated...Ch. 44 - Prob. 2TYUCh. 44 - Prob. 3TYUCh. 44 - Prob. 4TYUCh. 44 - Prob. 5TYUCh. 44 - Prob. 6TYUCh. 44 - Prob. 7TYUCh. 44 - Prob. 8TYUCh. 44 - Test Your Understanding 9. VISUALIZE Draw a simple...Ch. 44 - Prob. 10TYUCh. 44 - Prob. 11TYUCh. 44 - Prob. 12TYUCh. 44 - Test Your Understanding 13. SCIENCE, TECHNOLOGY,...
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Similar questions
- Assume that one ventricle of a child’s heart has an EDV of 90 mL, an ESV of 60 mL, and a cardiac output of 2.55 L/min. What are the child’s stroke volume (SV), ejection fraction (EF), and heart rate (HR)?a. SV = 60 mL; EF = 33%; HR = 85 bpmb. SV = 30 mL; EF = 60%; HR = 75 bpmc. SV = 150 mL; EF = 67%; HR = 42 bpmd. SV = 30 mL; EF = 33%; HR = 85 bpme. Not enough information is given to calculate these.arrow_forwardConsider a person standing up from a supine position. How do each of the following parameters change in the first seconds after standing compared to what they were at rest, before they return to normal set point? Total Peripheral Resistance (TPR) Venous Return End Diastolic Volume (EDV) Stroke Volume Heart Rate Mean Arterial Pressure (MAP) [Choose ] ✓ [Choose ] No change Decrease Increase [Choose ] [Choose ] [Choose ]arrow_forwardThere are three major factors that affect stroke volume and therefore affect cardiac output: afterload, preload, and contractility. Select two of these factors and explain how and why each affects cardiac output.arrow_forward
- Elma, an athlete, has a low resting heart rate of 60 heartbeats per minute. Her resting cardiac output is 5000 mL/minute and her end diastolic volume (EDV) was determined to be 140 mL. How much is her stroke volume and ESV (end systolic volume)?arrow_forwardduring a procedure, a patient's end diastolic volume was found to be 127mL. The end systolic volume was 45mL. The patient's heart rate was 67. What is the patient's stroke volume? what is their cardiac output? are these stroke volumes or cardiac outputs normal?arrow_forwardA 50-year-old man has a body weight of 110Kg, resting heart rate is 90bpm, arterial pressure is 120/70mm hematocrit is 35% and body temperature is normal. His pressure-volume diagram of the left ventricle is shown below.What is his resting cardiac output in ml/minute?arrow_forward
- Cardiac output is determined by what two variables ? preload and afterload end - diastolic volume and end - systolic stroke volume and ejection fraction heart rate and stroke volumearrow_forwardBelow are drawings of three different action potentials. Two of these occur in the heart, and one occurs in skeletal muscle. Which one comes from a contractile cardiac muscle cell? A skeletal muscle cell? A cardiac pacemaker cell? For each one, state which ion is responsible for the depolarization phase and which ion is responsible for the repolarization phase.arrow_forwardWhen Joe exercises, his cardiac output doubles. Before exercise, his heart rate is 60 beats/min. and his stroke volume is 80 ml/beat. During exercise, his heart rate is 105 beats/min. What is his stroke volume during exercise?arrow_forward
- Exercise-induced stress increases cardiac output and vasoconstriction, so why does the amplitude of the pulse change the way it does (compare this to what happens during the dive response)?arrow_forwardPotassium deficiency can result in irregular heart rhythms including bradycardia (slow heart rate), ventricular tachycardia (rapid ventricular systole), and ventricular fibrillation (asynchronous ventricular depolarization resulting in disorganized cardiac electrical activity). How would you expect ventricular tachycardia to impact stroke volume?arrow_forwardI need to calculate the approximate heart rate based on the given ECG results, but I can't get how to determine the length of time between two consecutive R waves. What I see, it's one second between the two highest waves (I suppose they are R waves). But it means the heart rate should be 60 beats per minute, but there is no option for this answer. Teach me how to determine correctly the length of time between two consecutive R waves.arrow_forward
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