I have a pdf. file cardiac-output, I would like help…
I have a pdf. file cardiac-output, I would like help on please Attachment Preview: SU_BIO1014_W3_Lab_Cardiac_Output.pdf Download Attachment This is an unformatted preview. Please download the attached document for the original format. Interactive Physiology Worksheet: Cardiovascular System: Cardiac Output The volume of blood ejected from the left or right ventricle into the aorta or 1. Define cardiac output (CO). ________________________________________________________ pulmonary whats the equation for CO CO=HR x SV 2. Write the equation for CO. _________________________________________________________ amount of blood pumped by EACH ventricle with each heartbeat, avarage 70 3. Define stroke volume (SV). _________________________________________________________ 70mL/beat SV=EDV-ESV 4. Write the equation for SV. _________________________________________________________ 5. Write the normal values (include correct units) for the following: 75 beats a min a. HR (heart rate) = ___________________________ 70Ml b. SV (stroke volume) = ___________________________ 120 mL c. EDV (end diastolic volume) = ___________________________ 50 mL d. ESV (end systolic volume) = ___________________________ 6. Given the normal values for HR and SV (above), calculate cardiac output: CO = HR × SV = 75 beats/minute x 70 ml/beat = 5250 ml/minute or 5.25 L/minute CO = __________________________________________________________________________ _______________________________________________________________________________ Page 1 of 2 BIO1014 Anatomy and Physiology II Lab © 2013 South University 7. Explain how the following factors affect HR, SV, and CO by placing arrows (increase, decrease, or no change) under them. HR SV CO a. increase SNS increased ____________ b. increased Venous return increased _____________ increased ____________ increased ____________ c. Exercise increased _____________ increased ____________ increased ____________ d. increased Calcium decreased _____________ increased ____________ no change ____________ e. decreased HR 8. no change _____________ increased ____________ no change _____________ no change ____________ no change ____________ Why would stroke volume increase with an increase in the sympathetic nervous system or an An increase in contractility leads to an increase in the force of contraction increase in calcium? ______________________________________________________________ 9. Why would stroke volume increase when heart rate slows down? An increase in filling time leads to an increase in end diastolic volume _______________________________________________________________________________ _______________________________________________________________________________ Page 2 of 2 BIO1014 Anatomy and Physiology II Lab © 2013 South University