each of the following factors will increase cardiac output except

Question 1


Question 2


Question 3

How many grams of oxygen gas will occupy a 10.0-L cylinder at 6.87 atm of pressure and a temperature of 37.0 degrees Celsius? Ideal Gas Equation: The ideal gas equation is very essential in dealing with ideal gas kinetic theory. Take note that the equation described the work done by the gas. This is defined as the product of the pressure and the volume, which is also P V = n R T .
Question 4

A cylinder contains 27.5 L of oxygen gas at a pressure of 1.8 atm and a temperature of 302 K. How many moles of gas are in the cylinder? Express your answer using two significant figures. Number of Moles of a Gas: A mole is a measure of the quantity of a substance in chemistry. It is the amount used to express the unit mass of a substance. Mathematically, it can be defined as the ratio between the mass of a substance to the molar mass of the substance.
Answer to question 1

Ans-30

A) venous return is rate of blood flow back to heart so it increases cardiac output so incorrect

B) parasympathetic stimulation cause decrease heart rate and force of contraction, so decrease cardiac output because of cardiac output= stroke volume*heart rate, the correct answer

C) sympathetic stimulation increase heart rate and force of contraction which increases cardiac output so incorrect

D) increase heart rate cause increase cardiac output(refer option B) so incorrect

Show only option b is correct

Ans-31

a) preventing backflow of blood which assists blood flow up against gravity towards heart so incorrect

b) blood away from the heart is characteristic of arteries so correct answer

c) Venus valve assist blood flow towards heart and prevent backflow of blood so incorrect

d) Venus wall permit blood flow in one direction only towards heart so incorrect

So only b option is correct

Ans-32

Outermost layer of blood vessel is called tunica externa, middle or muscular layer is called tunica media and innermost layer of blood vessel is called tunica into a

So C option is correct

Ans-33

Sympathetic stimulation constrict blood vessels or increase peripheral resistance which has a powerful short-term effect on peripheral resistance.

So C option is correct


Answer to question 2

1. The exception is the increased parasympathetic stimulation.

The venous return equals cardiac output. In para sympathetic system the heart rate is decreased and the sympathetic system is brought under control.

2. The AV valves will not close properly.

The AV valves are attached to the papillary muscles so that the opening and closure us controlled there. Any problem with the papillary muscle affect the closure of AV valves.

3. Reduction in ventricular diastolic is the reason.

As the diastole time decreases the time for ventricular filling reduces. So the preload decreases and thus the cardiac output is reduced.

4.its the right atrium during diastole. All other pressure will exceed than that of inferior vena cava


Answer to question 3


Answer to question 4

Answer and Explanation: _Increased afterload_will not increase cardiac output. An increase in afterload indicates an increase in resistance pressure in the ventricle that the heart must overcome in order to pump blood out of the heart. Mathematically this can be understood from the following equation: stroke volume = cardiac output/heart rate. As can be established from the equation, stroke volume and cardiac out put are proportional to one another. Thus, is stroke volume is decreased, cardiac output will also be decreased.

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