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Human body in health and illness chapter 17 Exam Study Guide.
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©THEBRIGHT EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 Human body in health and illness chapter 17 Exam Study Guide. Cardiac output (CO) - AnswersAmount of blood pumped by the ventricles x min. Cardiac output (CO) - AnswersDeterminated by heart rate and stroke volumen Cardiac cycle - An...

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  • December 13, 2024
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  • 2024/2025
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©THEBRIGHT EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.




Human body in health and illness chapter 17
Exam Study Guide.



Cardiac output (CO) - Answers✔Amount of blood pumped by the ventricles x min.

Cardiac output (CO) - Answers✔Determinated by heart rate and stroke volumen

Cardiac cycle - Answers✔Sequence of events that occurs during 1heart beat

Cardiac cycle - Answers✔Includes atria and ventrical systole(contraction) & diastole(relaxation)

SV changed by - Answers✔Starling law of heart(stretch)

SV changed by - Answers✔Inotropic effect(nonstetch)

Inotropic effect - Answers✔Change in myocardial contraction that is caused by stretchibg of the
heart muscle

Cardiac output - Answers✔-5000ml/min
-Amount of blood pumped by the ventricles in one/min
-stroke volume(SV) times heart rate(HR)

Stroke Volumen SV - Answers✔--70 ml/min
--amount of blood pumped by the venticles per beat

Diastole - Answers✔Phase of cardiac cycle when fill with blood

Diastole - Answers✔Myocardial relaxation

Systole - Answers✔Phase of cardiac cycle that refers to myocardial contraction

Starling's law of heart - Answers✔Change in myocardial contraction that is caused by stretching
of heart muacle

1

, ©THEBRIGHT EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.
Afterload - Answers✔Arteriolar contraction and hypertension causes.....to increase

Preload - Answers✔Amount of blood in the ventricle at the end of resting phase

Preload - Answers✔Form the basis of Starling law of heart

Preload - Answers✔Same as end-diastolic volume(EDV)

Ejection fraction - Answers✔May decline from 67% to 30% in failing heart
Ejection

Fraction - Answers✔% of EDV pumped by the ventricle

Dromotropic effect - Answers✔Digoxin slows the speed of cardiac impulse through the
conduction system=heart block

Chronotropic effect - Answers✔The effect of a drug that change heart rate (HR)

Afterload - Answers✔Resistence or opposition to the flow of blood

Cardiac resrve - Answers✔Capacity to increase cardiac output above the resting cardiac output

Chronotropic effect - Answers✔Change in HR

Diastole - Answers✔Relaxation of myocardial

Pulmonary edema - Answers✔Accumulation of liquid within lungs

Systole - Answers✔Contraction of heart muscle

Atrial systole - Answers✔The atria contracts&pump blood into ventricles.AV valves are open &
ventricles relaxed

Ventricular syatole - Answers✔End of atrial systole,ventricals contracts,blood is forced against
AV valves causing them to snapshut. Blood pushes semilunar valves open&allows blood to flow
into pulmonary artery&aorta

Diastole - Answers✔As the chamber relax,blood flows into atria.is a period of filling blood

HR - Answers✔70beats/min

Heart rate - Answers✔# of time the heart beat/min

Orthoprea - Answers✔Left heart failure.inability to breathe while lying down

Right heart failure - Answers✔Blood backs into superior vena cava causing jugular vein
distention JVD

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