Question 1

The plate au a t the hig h flow end of the vas cula r fun ction c urve is due to

Accepted Answer

A)  Limited flow because of the reduced pressure gradient 
B)  High flow due to Increase d arterial pressure 
C)  Limit to flow caused by partial collapse or flutter of the veins 
D)  Failure of the muscle pumps to keep up 
E)  Low pressure caused by venodilation 
A)  Limited flow because of the reduced pressure gradient 
B)  High flow due to Increase d arterial pressure 
C)  Limit to flow caused by partial collapse or flutter of the veins 
D)  Failure of the muscle pumps to keep up 
E)  Low pressure caused by venodilation C

Question 2

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, decreasing the TPR

Accepted Answer

A)  Decreases the X-intercept 
B)  Increases the X-intercept 
C)  Decreases the slope 
D)  Increases the slope 
E)  Both A and C are true 
A)  Decreases the X-intercept 
B)  Increases the X-intercept 
C)  Decreases the slope 
D)  Increases the slope 
E)  Both A and C are true D

Question 3

Most of the total peripheral resistance (TPR) is in the

Accepted Answer

A)  Major arteries 
B)  Sm all arteries 
C)  Arterioles 
D)  Capillaries 
E)  Veins 
A)  Major arteries 
B)  Sm all arteries 
C)  Arterioles 
D)  Capillaries 
E)  Veins C

Question 4

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial
pressure on the abscissa. In this case, the X-intercept is

Accepted Answer

A)  W here the veins collapse or flutter 
B)  Equal to CV / CA 
C)  1 / TPR 
D)  - (1 + CV/ C
A)  / TPR 
E)  The mean system ic pressure 
A)  W here the veins collapse or flutter 
B)  Equal to CV / CA 
C)  1 / TPR 
D)  - (1 + CV/ C
A)  / TPR 
E)  The mean system ic pressure

Question 5

The compliance of the veins is much greater than the compliance of the arteries because

Accepted Answer

A)  Veins have ellipsoidal cross sections and not circular cross sections 
B)  Veins are larger 
C)  Arteries are stiffer 
D)  Arteries have more parasympathetic innervation 
E)  The pressure is lower on the venous side 
A)  Veins have ellipsoidal cross sections and not circular cross sections 
B)  Veins are larger 
C)  Arteries are stiffer 
D)  Arteries have more parasympathetic innervation 
E)  The pressure is lower on the venous side

Question 6

In persons with a hypofunctional heart (weak contractility), the cardiac output is partially
compensated for by

Accepted Answer

A)  An increase in the right atrial pressure 
B)  An increase in arterial pressure 
C)  Increased cardiac contractility 
D)  Vasodilation driven by sympathetic stimulation 
E)  Decreased interstitial fluid pressure 
A)  An increase in the right atrial pressure 
B)  An increase in arterial pressure 
C)  Increased cardiac contractility 
D)  Vasodilation driven by sympathetic stimulation 
E)  Decreased interstitial fluid pressure

Question 7

At steady-state, the cardiac output

Accepted Answer

A)  Is equal to TPR / MAP 
B)  Is equal to the flow in the abdominal aorta 
C)  Is equal to venous return 
D)  Determ ines the pulse pressure 
E)  Determ ines the pulse velocity 
A)  Is equal to TPR / MAP 
B)  Is equal to the flow in the abdominal aorta 
C)  Is equal to venous return 
D)  Determ ines the pulse pressure 
E)  Determ ines the pulse velocity

Question 8

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, venoconstriction

Accepted Answer

A)  Decreases the X-intercept 
B)  Increases the X-intercept 
C)  Decreases the slope 
D)  Increases the slope 
E)  Both A and C are true 
A)  Decreases the X-intercept 
B)  Increases the X-intercept 
C)  Decreases the slope 
D)  Increases the slope 
E)  Both A and C are true

Question 9

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, the slope of the linear portion of the curve is

Accepted Answer

A)  - 1 + Cv/ CA
V / CA 
B)  CV / CA 
C)  1 / TPR 
D)  - (1 + CV/ C
A)  / TPR 
E)  1/(CV + CA 
A)  - 1 + Cv/ CA
V / CA 
B)  CV / CA 
C)  1 / TPR 
D)  - (1 + CV/ C
A)  / TPR 
E)  1/(CV + CA

Question 10

W hich is NOT part of the sympathetic effects on cardiovascular system?

Accepted Answer

A)  Increased heart rate 
B)  Vasoconstriction 
C)  Increased cardiac contractility 
D)  Increased filtration coefficient across capillary walls 
E)  Venoconstricti 
A)  Increased heart rate 
B)  Vasoconstriction 
C)  Increased cardiac contractility 
D)  Increased filtration coefficient across capillary walls 
E)  Venoconstricti

Question 11

Sympathetic stim ulation should have which of the following effects

Accepted Answer

A)  Increase in PMS because of vasoconstriction 
B)  Increase in PMS because of venoconstriction 
C)  Increase in P MSbecause of increased cardiac contractility 
D)  Decrease in PMS because of increased TPR 
E)  Decrease in PMS because of decreased slope of the vascular function curve 
A)  Increase in PMS because of vasoconstriction 
B)  Increase in PMS because of venoconstriction 
C)  Increase in P MSbecause of increased cardiac contractility 
D)  Decrease in PMS because of increased TPR 
E)  Decrease in PMS because of decreased slope of the vascular function curve

Question 12

The mean systemic pressure is

Accepted Answer

A)  The average of the central venous pressure and m ean arterial pressure 
B)  Measured w ith the heart stopped and blood redistributed so that flow is zero 
C)  Measured in the right atria during diastole 
D)  Measured in the central veins during systole 
E)  The average pressure in the central veins 
A)  The average of the central venous pressure and m ean arterial pressure 
B)  Measured w ith the heart stopped and blood redistributed so that flow is zero 
C)  Measured in the right atria during diastole 
D)  Measured in the central veins during systole 
E)  The average pressure in the central veins

Question 13

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, the slope of the linear portion of the curve

Accepted Answer

A)  Increases with increases in TPR 
B)  Increases with decreases in TPR 
C)  Increases its X-intercept with increases in TPR 
D)  Decreases its X-intercept with increases in TPR 
E)  Both A and C are true 
A)  Increases with increases in TPR 
B)  Increases with decreases in TPR 
C)  Increases its X-intercept with increases in TPR 
D)  Decreases its X-intercept with increases in TPR 
E)  Both A and C are true

Question 14

At steady-state, the flow through the pulmonary circulation

Accepted Answer

A)  Is the same as the cardiac output 
B)  Exceeds the cardiac output by the flow to the liver 
C)  Exceeds the cardiac output by the flow to the lung 
D)  Is the cardiac output minus the flow to the liver 
E)  Is the cardiac output minus the flow to the lung 
A)  Is the same as the cardiac output 
B)  Exceeds the cardiac output by the flow to the liver 
C)  Exceeds the cardiac output by the flow to the lung 
D)  Is the cardiac output minus the flow to the liver 
E)  Is the cardiac output minus the flow to the lung

Exam 43: Integration of Cardiac Output and Venous Return

The plate au a t the hig h flow end of the vas cula r fun ction c urve is due to

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, decreasing the TPR

Most of the total peripheral resistance (TPR) is in the

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, the X-intercept is

The compliance of the veins is much greater than the compliance of the arteries because

In persons with a hypofunctional heart (weak contractility), the cardiac output is partially compensated for by

At steady-state, the cardiac output

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, venoconstriction

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, the slope of the linear portion of the curve is

W hich is NOT part of the sympathetic effects on cardiovascular system?

Sympathetic stim ulation should have which of the following effects

The mean systemic pressure is

The vascular function curve is traditionally plotted as flow on the ordinate against the right atrial pressure on the abscissa. In this case, the slope of the linear portion of the curve

At steady-state, the flow through the pulmonary circulation

Physical Foundations Ii: Electrical Force Potential Capacitance and Current

Chemical Foundations I: Chemical Energy and Intermolecular Forces

Chemical Foundations Ii: Concentration and Kinetics

Diffusion

Electrochemical Potential and Free Energy

Cell Structure

Dna and Protein Synthesis

Protein Structure

Biological Membranes

Passive Transport and Facilitated Diffusion

Active Transport: Pumps and Exchangers

Osmosis and Osmotic Pressure

Cell Signaling

ATP Production I: Glycolysis

Atp Production Ii: Tca Cycle and Oxidative Phosphorylation

Atp Production Iii: Fatty Acid Oxidation and Amino Acid Oxidation

Origin of the Membrane Potential

The Action Potential

Propagation of the Action Potential

Skeletal Muscle Mechanics

Contractile Mechanisms in Skeletal Muscle

Neuromuscular Junction and Ec Coupling

Muscle Energetics Fatigue and Training

Smooth Muscle

Organization of the Nervous System

Cells Synapses and Neurotransmitters

Cutaneous Sensory Systems

Spinal Reflexes

Balance and Control of Movement

the Chemical Senses

Hearing

Vision

Autonomic Nervous System

Overview of the Cv System and Blood

Plasma and Red Blood Cells

White Blood Cells and Inflammation

The Heart As a Pump

Cellular Basis of Cardiac Contractility

the Cardiac Function Curve

Vascular Function: Hemodynamics

Microcirculation and Solute Exchange

Regulation of Perfusion

Regulation of Arterial Pressure

Mechanics of Breathing

Lung Volumes and Airway Resistance

Gas Exchange in the Lung

Oxygen and Carbon Dioxide Transport

Acid Base Physiology I Bicarbonate Buffers and Respiratory Compensation

Control of Ventilation

Anatomy and Renal Overview

Glomerular Filtration

Tubular Reabsorption and Secretion

Concentration and Dilution of Urine

Mouth and Esophagus

The Stomach

Intestinal and Colonic Motility

Pancreatic and Biliary Secretion

Digestion and Absorption of the Macronutrients

Energy Balance and Regulation of Food Intake

General Principles of Endocrinology

Hypothalamus and Pituitary Gland

The Thyroid Gland

The Endocrine Pancreas

The Adrenal Cortex

The Adrenal Medulla