Question 1

Which of the following statements is not true of the cardiovascular system?

Accepted Answer

A)  For the body to survive, all parts of the body must be equally supplied with blood. 
B)  The cardiovascular system contains much less blood than the system could hold. 
C)  Blood must be directed to the cells that need it most. 
D)  Blood must move constantly through the cardiovascular system. 
A)  For the body to survive, all parts of the body must be equally supplied with blood. 
B)  The cardiovascular system contains much less blood than the system could hold. 
C)  Blood must be directed to the cells that need it most. 
D)  Blood must move constantly through the cardiovascular system.

Question 2

On an ECG,the T wave represents:

Accepted Answer

A)  depolarization of the atria. 
B)  repolarization of the atria. 
C)  depolarization of the ventricles. 
D)  repolarization of the ventricles. 
A)  depolarization of the atria. 
B)  repolarization of the atria. 
C)  depolarization of the ventricles. 
D)  repolarization of the ventricles.

Question 3

When trying to stop arterial bleeding by applying pressure,why is it necessary to apply pressure between the bleeding part and the heart?

Accepted Answer

A)  Because blood flows from the heart through the arteries to the injured part, pressure placed between the heart and the bleeding point cuts off the source of blood flow to that point. 
B)  Because blood pressure is greater in the arteries coming from the heart, pressure placed between the heart and bleeding point reduces pressure, thus cutting off the source of blood flow to that point. 
C)  Because venous blood pressure changes by alternate contraction and relaxation of the atria, pressure placed between the heart and bleeding point cuts off the source of venous blood flow to that point. 
D)  Because arterial blood pressure changes by alternate contraction and relaxation of the atria, pressure placed between the heart and bleeding point cuts off the source of arterial blood flow to that point. 
A)  Because blood flows from the heart through the arteries to the injured part, pressure placed between the heart and the bleeding point cuts off the source of blood flow to that point. 
B)  Because blood pressure is greater in the arteries coming from the heart, pressure placed between the heart and bleeding point reduces pressure, thus cutting off the source of blood flow to that point. 
C)  Because venous blood pressure changes by alternate contraction and relaxation of the atria, pressure placed between the heart and bleeding point cuts off the source of venous blood flow to that point. 
D)  Because arterial blood pressure changes by alternate contraction and relaxation of the atria, pressure placed between the heart and bleeding point cuts off the source of arterial blood flow to that point.

Question 4

The period during which blood is pumped out of the atria and into the ventricles is called:

Accepted Answer

A)  atrial systole. 
B)  isovolumetric ventricular contraction. 
C)  isovolumetric ventricular relaxation. 
D)  passive ventricular filling. 
A)  atrial systole. 
B)  isovolumetric ventricular contraction. 
C)  isovolumetric ventricular relaxation. 
D)  passive ventricular filling.

Question 5

Name and explain the vasomotor reflexes.

Accepted Answer

Vasomotor reflexes are the body's automa

Question 6

Peripheral resistance to blood flow comes about because of:

Accepted Answer

A)  friction between the blood cells and vessel walls. 
B)  an increase in "arteriole runoff." 
C)  constriction of the veins at the end of the capillary bed. 
D)  both A and C. 
A)  friction between the blood cells and vessel walls. 
B)  an increase in "arteriole runoff." 
C)  constriction of the veins at the end of the capillary bed. 
D)  both A and C.

Question 7

Explain how the Starling law relates to cardiac output.

Accepted Answer

The Starling law, also known as the Fran

Question 8

The first heart sound heard,or the "lub" sound,is caused by the _____ and the _____ valves closing.

Accepted Answer

A)  ventricles contracting; AV 
B)  atria contracting; SL 
C)  atria relaxing; SL 
D)  ventricles relaxing; AV 
A)  ventricles contracting; AV 
B)  atria contracting; SL 
C)  atria relaxing; SL 
D)  ventricles relaxing; AV

Question 9

The Fick formula is used for determining:

Accepted Answer

A)  cardiac output. 
B)  blood vessel resistance. 
C)  mean pressure of the arteries. 
D)  cardiac cycle. 
A)  cardiac output. 
B)  blood vessel resistance. 
C)  mean pressure of the arteries. 
D)  cardiac cycle.

Question 10

The primary fluid flow principle of circulation is based on all of the following except a fluid:

Accepted Answer

A)  flows only when a pressure gradient is absent. 
B)  does not flow when the pressure is the same in all parts of it. 
C)  flows only when its pressure is higher in one area than in another. 
D)  flows always from its higher-pressure area toward its lower-pressure area. 
A)  flows only when a pressure gradient is absent. 
B)  does not flow when the pressure is the same in all parts of it. 
C)  flows only when its pressure is higher in one area than in another. 
D)  flows always from its higher-pressure area toward its lower-pressure area.

Question 11

Match each part of the conduction system of the heart to the description of its location or function.
-structure through which conduction moves most slowly

Accepted Answer

A) Interatrial bundles 
B) Atrioventricular node 
C) Sinoatrial node 
D) Purkinje fibers 
E) Bundles of His
F)Internodal bundles 
A) Interatrial bundles 
B) Atrioventricular node 
C) Sinoatrial node 
D) Purkinje fibers 
E) Bundles of His
F)Internodal bundles

Question 12

Hypokalemia can cause an increase in the size of which of the following?

Accepted Answer

A)  P wave 
B)  QRS complex 
C)  T wave 
D)  U wave 
A)  P wave 
B)  QRS complex 
C)  T wave 
D)  U wave

Question 13

Which of the following is not part of the vasomotor control mechanism?

Accepted Answer

A)  The vasoconstrictor center in the medulla 
B)  Sympathetic stimulation of smooth muscles surrounding the resistance vessels 
C)  Sympathetic stimulation of the heart to increase cardiac output 
D)  All of the above are part of the vasomotor control mechanism. 
A)  The vasoconstrictor center in the medulla 
B)  Sympathetic stimulation of smooth muscles surrounding the resistance vessels 
C)  Sympathetic stimulation of the heart to increase cardiac output 
D)  All of the above are part of the vasomotor control mechanism.

Question 14

Explain how the forces of osmotic pressure and hydrostatic pressure work to maintain a balance of fluid moving into and out of the capillary.

Accepted Answer

Osmotic pressure and hydrostatic pressur

Question 15

Circulatory shock caused by an acute allergic reaction is called _____ shock.

Accepted Answer

A)  cardiogenic 
B)  hypovolemic 
C)  anaphylactic 
D)  septic 
A)  cardiogenic 
B)  hypovolemic 
C)  anaphylactic 
D)  septic

Question 16

Match each ECG wave or complex with the corresponding action in the cardiac cycle.
-atrial depolarization

Accepted Answer

A) QRS complex 
B) P wave 
C) T wave 
D) U wave 
A) QRS complex 
B) P wave 
C) T wave 
D) U wave

Question 17

All of the following will increase heart rate except:

Accepted Answer

A)  sympathetic stimulation. 
B)  a decrease in aortic blood pressure. 
C)  a decrease in carotid blood pressure. 
D)  stimulation of cold receptors in the skin. 
A)  sympathetic stimulation. 
B)  a decrease in aortic blood pressure. 
C)  a decrease in carotid blood pressure. 
D)  stimulation of cold receptors in the skin.

Question 18

Match each part of the conduction system of the heart to the description of its location or function.
-structure that is located below the atrial epicardium at its junction with the superior vena cava

Accepted Answer

A) Interatrial bundles 
B) Atrioventricular node 
C) Sinoatrial node 
D) Purkinje fibers 
E) Bundles of His
F)Internodal bundles 
A) Interatrial bundles 
B) Atrioventricular node 
C) Sinoatrial node 
D) Purkinje fibers 
E) Bundles of His
F)Internodal bundles

Question 19

Circulatory shock caused by a drop in the amount of blood in the circulatory system is called _____ shock.

Accepted Answer

A)  cardiogenic 
B)  hypovolemic 
C)  anaphylactic 
D)  septic 
A)  cardiogenic 
B)  hypovolemic 
C)  anaphylactic 
D)  septic

Question 20

The blood in the subclavian vein of the chest had a P₁ of 15 mm Hg.For the blood to flow back to the heart,the P₂ in the superior vena cava:

Accepted Answer

A)  would have to be greater than 25. 
B)  would have to be between 15 and 25. 
C)  would have to be less than 15. 
D)  could be at any value. 
A)  would have to be greater than 25. 
B)  would have to be between 15 and 25. 
C)  would have to be less than 15. 
D)  could be at any value.

Exam 22: B: Physiology of the Cardiovascular System

Which of the following statements is not true of the cardiovascular system?

On an ECG,the T wave represents:

When trying to stop arterial bleeding by applying pressure,why is it necessary to apply pressure between the bleeding part and the heart?

The period during which blood is pumped out of the atria and into the ventricles is called:

Name and explain the vasomotor reflexes.

Peripheral resistance to blood flow comes about because of:

Explain how the Starling law relates to cardiac output.

The first heart sound heard,or the "lub" sound,is caused by the _____ and the _____ valves closing.

The Fick formula is used for determining:

The primary fluid flow principle of circulation is based on all of the following except a fluid:

Match each part of the conduction system of the heart to the description of its location or function. -structure through which conduction moves most slowly

Hypokalemia can cause an increase in the size of which of the following?

Which of the following is not part of the vasomotor control mechanism?

Explain how the forces of osmotic pressure and hydrostatic pressure work to maintain a balance of fluid moving into and out of the capillary.

Circulatory shock caused by an acute allergic reaction is called _____ shock.

Match each ECG wave or complex with the corresponding action in the cardiac cycle. -atrial depolarization

All of the following will increase heart rate except:

Match each part of the conduction system of the heart to the description of its location or function. -structure that is located below the atrial epicardium at its junction with the superior vena cava

Circulatory shock caused by a drop in the amount of blood in the circulatory system is called _____ shock.

The blood in the subclavian vein of the chest had a P₁ of 15 mm Hg.For the blood to flow back to the heart,the P₂ in the superior vena cava:

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

B: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Physiology of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

B: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine System

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

B: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

Filters

The first heart sound heard,or the "lub" sound,is caused by the _ and the _ valves closing.