ZuoTi.Pro
Question

During exercise, the filling time for the ventricles is greatly shortened, however cardiac output increases. How...

During exercise, the filling time for the ventricles is greatly shortened, however cardiac output increases. How is this best explained?

A. The increase in venous return during exercise compensates for the reduced filling time

B. Stroke volume decreases but an increased heart rate compensates for it

C. Stroke volume decreases but increased contractility compensates for it

D. None of the above

E. A and B

science   Anatomy-And-Physiology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

A

It is remarkable that exercise heart rates six to seven times resting values are not associated with a fall in stroke volume, which is maintained by splenic contraction, increased venous return, and increased myocardial contractibility.

0 0
Add a comment
Know the answer?
Add Answer to:
During exercise, the filling time for the ventricles is greatly shortened, however cardiac output increases. How...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Question 30 Not yet answeredPoints out of 2.50Flag question Question text A decrease in parasympathetic stimulation...

    Question 30 Not yet answeredPoints out of 2.50Flag question Question text A decrease in parasympathetic stimulation of the SA NODE Select one: a. Increase in HR;decrease in cardiac output; increase in BP b. Increase in HR; increase in cardiac output; increase in BP c. Decrease in HR; decrease in cardiac output; decrease in BP d. Decrease in HR; decrease in cardiac output; increase in BP Question 31 Not yet answeredPoints out of 2.50Flag question Question text Sympathetic stimulation of the...

  • During exercise, both QO2 and QCO2 increases as well as cardiac output, Qa. Suppose that during...

    During exercise, both QO2 and QCO2 increases as well as cardiac output, Qa. Suppose that during exercise QO2 increases to 2000 mL/min and the respiratory quotient remains at 0.8, and that Qa increases to 18 L/min. Assume that PaO2 remains at 95 mmHg, that O2 saturation is at 98% and PaO2 is 40 mmHg and that blood [Hb] = 15 g %. A. What is the total arterial content of O2? B. What is the venous content of O2? C....

  • Case 1- New data set: ABP: 90/60 mm Hg, HR 145 beats/min, cardiac output=3 l/min, CVP=0...

    Case 1- New data set: ABP: 90/60 mm Hg, HR 145 beats/min, cardiac output=3 l/min, CVP=0 mm Hg, PAP=30/10 mm Hg, PCWP=2 mm Hg. I calculated that MAP=70 mm Hg, SVR=1866.7 dynes, PA mea=16.7 mm HG, PVR=139.2 dynes, and SV=20.1 ml. I just need help with the conceptual questions: A. How would SV normally respond if venous return increases? (increase, decrease, or nothing) B. What would be the best treatment for the patient? (diuretics, aortic balloon pump, intravenous fluid admin,...

  • O LIVE 46Physiologically, shock results in: A. Inadequate delivery of Oxygen to body cells. B. Tachycardia....

    O LIVE 46Physiologically, shock results in: A. Inadequate delivery of Oxygen to body cells. B. Tachycardia. Je. Hypotension. Increasing levels of Hydrogen ions, ✓ All of the above. During Blood Pressure evaluation, if the diastolic 2 (D2) cannot be measured, this means: A. Vasodilation is imminent. B) A Korotkoff sound. Is present. C. Resistance is diminishing. D. All of the above. . E. None of the above. 29 489 A deficiency in ADH wolila Check deficiency in ADH would result...

  • Question 1 During ventricular fibrillation, there is no coordinated ventricular contraction. What effect does this have...

    Question 1 During ventricular fibrillation, there is no coordinated ventricular contraction. What effect does this have on cardiac output? a. Increased cardiac output. b. Decreased cardiac output. c. No cardiac output. d. Cardiac output will remain normal. e. None of the above is correct Question 2 A “portal system” is the name for a. arteries that bypass a major organ. b. veins that bypass a major organ. c. two capillary beds in series. d. arteries that connect directly to veins...

  • 1. Background: Critically ill patients in a cardiovascular intensive care unit must be intensely monitored for...

    1. Background: Critically ill patients in a cardiovascular intensive care unit must be intensely monitored for any number of conditions. One of these conditions is hypoperfusion, which is an overall decrease in blood flow throughout the body. Low stroke volume is one indicator of hypoperfusion. The pressure-volume (PV) graph below shows three possible loops for the heart. The control loop shows a healthy heart while the other two loops show reduced or increased preload (assuming that afterload and contractility remain...

  • I just need the Control Patient's CO; please and thank you 1. Background: Critically ill patients...

    I just need the Control Patient's CO; please and thank you 1. Background: Critically ill patients in a cardiovascular intensive care unit must be intensely monitored for any number of conditions. One of these conditions is hypoperfusion, which is an overall decrease in blood flow throughout the body. Low stroke volume is one indicator of hypoperfusion. The pressure-volume (PV) graph below shows three possible loops for the heart. The control loop shows a healthy heart while the other two loops...

  • QUESTION 1 Vasovagal syncope is one of the most common causes of fainting and occurs in...

    QUESTION 1 Vasovagal syncope is one of the most common causes of fainting and occurs in some individuals when they see blood or a needle. Which of the following physiological responses occurs? reduced cerebral blood flow decreased blood pressure decreased heart rate All the alternatives 2 points    QUESTION 2 Calculate mean arterial pressure (MAP) if a person has a blood pressure reading of 107/72. 96 mm Hg 76 mm Hg 119 mm Hg 84 mm Hg 2 points   ...

  • QUESTION 1. Which of the following is produced by the cells of the Zona Glomerulosa? Group...

    QUESTION 1. Which of the following is produced by the cells of the Zona Glomerulosa? Group of answer choices Mineralocorticoids Glucocorticoids Glucagon T3 & T4 DHEA Question 2 During which phase of the cardiac cycle would you expect the pressure in the left ventricle to rise above the pressure in the aorta? Group of answer choices Isovolumetric filling Ventricular diastole Atrial systole Isovolumetric relaxation Isovolumetric contraction Question 3 Which hormone increases both Glycogenolysis and Gluconeogenesis? Group of answer choices DHEA...

  • True or False: A respiratory rate consistently less than 10 or greater than 60 breaths per...

    True or False: A respiratory rate consistently less than 10 or greater than 60 breaths per minute in a child of any age is abnormal and suggests the presence of a potentially serious problem. True False True or False: PALS management of respiratory distress/failure is adjusted based on the severity of the current condition. True False True or False: Shock may occur with a normal, increased, or decreased systemic arterial pressure. True False True or False: Respiratory failure or shock...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT