The 2 principle factors that determine Cardiac Output are: A. Heart Rate & Blood Volume B....

The 2 principle factors that determine Cardiac Output are:

A. Heart Rate & Blood Volume

B. End Diastolic Volume & End Systolic Volume

C. Heart Rate & Blood Pressure

D. Stroke Volume & Blood Volume

E. Stroke Volume & Heart Rate

Expert Solution

Option 'E' (Stroke Volume & Heart Rate) is correct

Justification: Cardiac output is the amount of blood that the heart pumps through circulatory system in one minute and it is influenced by the stroke volume and the heart rate. Stroke volume is the volume of blood pumped from the left ventricle per beat. Heart rate is the speed of heartbeat measured by the number of contractions of heart per one minute and the formula for cardiac output is:

CO = SV × HR

(CO = Cardiac Output; SV = Stroke Volume; HR = Heart Rate)

Justification for incorrect options:

Option 'A' is incorrect because cardiac output is determined by stroke volume and heart rate but NOT by the blood volume.
Option 'B' is incorrect because end-diastolic volume and end-systolic volume are used to determine the stroke volume but not the cardiac output.
Option 'C' is incorrect because cardiac output is not determined by the blood pressure.
Option 'D' is incorrect because cardiac output is determined by stroke volume and heart rate but not by the blood volume.

Thank you!

Sydney Mullin answered 1 year ago

Define: Hemolymph cardiac cycle heart rate stroke volume cardiac output endothelium Platelets thrombus Respiratory pigments

Given that cardiac output (CO) is determined by two variables, heart rate (HR) and stroke volume...

Given that cardiac output (CO) is determined by two variables, heart rate (HR) and stroke volume (SV), compare a size-paired aerobically trained individual’s cardiac output (and associated HR and SV) with that of an untrained individual at various paired workloads: rest, moderate intensity exercise and COmax. (Vo2max)

for a blood volume of 5L and a cardiac output of 5L/ minute, what is the...

for a blood volume of 5L and a cardiac output of 5L/ minute, what is the circulation time, that is to say, the average time required for a blood cell to pass completely around the systemic and pulmonary circuits? a. same question above for a shrew? b. what about an exercising shrew?

1. Physiology of blood pressure and cardiac output 2. Complication of hypertension and heart failure including...

1. Physiology of blood pressure and cardiac output 2. Complication of hypertension and heart failure including prevention

-How does the body respond to blood loss? (hormones, nervous system, cardiac output and contractility, heart...

-How does the body respond to blood loss? (hormones, nervous system, cardiac output and contractility, heart rate, blood vessels) What causes death from hemorrhagic shock?

Discuss the cardiac conduction system and automaticity of heart Discuss cardiac output and the variables that...

Discuss the cardiac conduction system and automaticity of heart Discuss cardiac output and the variables that dictate it.

Identify the inputs to cardiac center which affect the heart rate. Identify the factors that affect...

Identify the inputs to cardiac center which affect the heart rate. Identify the factors that affect cardiac output.

3. Considering the cardiovascular system. a) Write the formula relating cardiac output, heart rate, and stroke...

3. Considering the cardiovascular system. a) Write the formula relating cardiac output, heart rate, and stroke volume. And indicate the normal values of cardiac output, stroke volume and heart rate of a resting adult. b) A man was hurt in a car accident with heavy bleeding. I. State the change in blood volume with heavy bleeding. II. Predict and briefly explain the possible change in cardiac output and blood pressure of that man. III. The man has a very high...

1) Cardiac output increases during exercise due to an increase in both heart rate and stroke...

1) Cardiac output increases during exercise due to an increase in both heart rate and stroke volume. Which of the following contribute to this increase in stroke volume? (Select all that apply). a) Constriction of veins by the sympathetic nervous system b) The increase in heart rate directly increases filling time c) Increased stretching of the cardiac myocytes due to increased EDV d) Increased sympathetic stimulation of the ventricles e) Withdrawn (decreased) parasympathetic stimulation of the ventricles - - -...

Which factors affect cardiac output? What types of changes in cardiac output can be made to...

Which factors affect cardiac output? What types of changes in cardiac output can be made to try and treat hypertension and congestive heart failure? Many classes of drugs affect cardiac output, which one is in JNC 8 protocol.

Question