Question 1

Which structure of the heart is attacked by the immune system in a case of rheumatic fever?

Accepted Answer

A)  aorta 
B)  vena cava 
C)  myocardium 
D)  heart valves 
E)  sinoatrial node 
A)  aorta 
B)  vena cava 
C)  myocardium 
D)  heart valves 
E)  sinoatrial node

Question 2

The most dangerous arrhythmia is

Accepted Answer

A)  ventricular tachycardia. 
B)  ventricular bradycardia. 
C)  ventricular flutter. 
D)  atrial fibrillation. 
E)  ventricular fibrillation. 
A)  ventricular tachycardia. 
B)  ventricular bradycardia. 
C)  ventricular flutter. 
D)  atrial fibrillation. 
E)  ventricular fibrillation.

Question 3

Following balloon angioplasty, a small wire cylinder known as a ____ may be inserted to keep the artery open.

Accepted Answer

A)  shunt 
B)  shaft 
C)  stent 
D)  pipette 
E)  bushing 
A)  shunt 
B)  shaft 
C)  stent 
D)  pipette 
E)  bushing

Question 4

Which of the following vessels offers more resistance to blood flow than the others?

Accepted Answer

A)  arterioles 
B)  venules 
C)  arteries 
D)  veins 
E)  other capillaries 
A)  arterioles 
B)  venules 
C)  arteries 
D)  veins 
E)  other capillaries

Question 5

The cardiac muscle of the heart is called the

Accepted Answer

A)  pericardium. 
B)  endocardium. 
C)  endothelium. 
D)  chordae tendineae. 
E)  myocardium. 
A)  pericardium. 
B)  endocardium. 
C)  endothelium. 
D)  chordae tendineae. 
E)  myocardium.

Question 6

Diastolic pressure is

Accepted Answer

A)  the lowest blood pressure in the aorta. 
B)  the pressure measured when the left ventricle is contracted. 
C)  the peak pressure in the aorta when the left ventricle contracts. 
D)  the difference between the highest and lowest pressures. 
E)  an average of high and low pressures. 
A)  the lowest blood pressure in the aorta. 
B)  the pressure measured when the left ventricle is contracted. 
C)  the peak pressure in the aorta when the left ventricle contracts. 
D)  the difference between the highest and lowest pressures. 
E)  an average of high and low pressures.

Question 7

What is the average cardiac output from each ventricle in one minute?

Accepted Answer

A)  3 liters 
B)  4 liters 
C)  5 liters 
D)  6 liters 
E)  7 liters 
A)  3 liters 
B)  4 liters 
C)  5 liters 
D)  6 liters 
E)  7 liters

Question 8

Baroreceptors are located in the

Accepted Answer

A)  coronary arteries. 
B)  cardiac veins. 
C)  pulmonary arteries. 
D)  carotid arteries. 
E)  pulmonary veins. 
A)  coronary arteries. 
B)  cardiac veins. 
C)  pulmonary arteries. 
D)  carotid arteries. 
E)  pulmonary veins.

Question 9

Warning signs of a heart attack do NOT include

Accepted Answer

A)  pain behind the breastbone. 
B)  pain radiating down the left arm. 
C)  sweating. 
D)  nausea. 
E)  pain radiating down right leg. 
A)  pain behind the breastbone. 
B)  pain radiating down the left arm. 
C)  sweating. 
D)  nausea. 
E)  pain radiating down right leg.

Question 10

Which characteristic of capillaries aids in the process of diffusion?

Accepted Answer

A)  slow blood flow 
B)  one cell thick walls 
C)  rapid blood flow 
D)  both slow blood flow and one cell thick walls 
E)  both one cell thick walls and rapid blood flow 
A)  slow blood flow 
B)  one cell thick walls 
C)  rapid blood flow 
D)  both slow blood flow and one cell thick walls 
E)  both one cell thick walls and rapid blood flow

Question 11

The semilunar valves are located between the

Accepted Answer

A)  left and right atria. 
B)  left ventricle and left atrium. 
C)  both ventricles and the arteries that lead away from them. 
D)  right atrium and right ventricle. 
E)  left and right ventricles. 
A)  left and right atria. 
B)  left ventricle and left atrium. 
C)  both ventricles and the arteries that lead away from them. 
D)  right atrium and right ventricle. 
E)  left and right ventricles.

Question 12

Blood in arteries

Accepted Answer

A)  always travels away from the heart. 
B)  travels away from the heart only if it is oxygen rich. 
C)  always travels toward the heart. 
D)  travels from the lungs. 
E)  is always oxygen rich. 
A)  always travels away from the heart. 
B)  travels away from the heart only if it is oxygen rich. 
C)  always travels toward the heart. 
D)  travels from the lungs. 
E)  is always oxygen rich.

Question 13

Rheumatic fever is caused by infections from which genus of bacteria?

Accepted Answer

A)  Streptococcus 
B)  Staphylococcus 
C)  Escherichia 
D)  Micrococcus 
E)  Mycobacterium 
A)  Streptococcus 
B)  Staphylococcus 
C)  Escherichia 
D)  Micrococcus 
E)  Mycobacterium

Question 14

Blood pressure is measured in

Accepted Answer

A)  millimeters of mercury. 
B)  inches of mercury. 
C)  millimeters of water. 
D)  inches of water. 
E)  grams per square inch. 
A)  millimeters of mercury. 
B)  inches of mercury. 
C)  millimeters of water. 
D)  inches of water. 
E)  grams per square inch.

Question 15

Heart excitation originates in the

Accepted Answer

A)  atrioventricular node. 
B)  intercalated disk. 
C)  sinoatrial node. 
D)  pericardium. 
E)  endocardium. 
A)  atrioventricular node. 
B)  intercalated disk. 
C)  sinoatrial node. 
D)  pericardium. 
E)  endocardium.

Question 16

Which of the following is NOT found in an arteriole?

Accepted Answer

A)  elastic layer 
B)  basement membrane 
C)  smooth muscle 
D)  valve 
E)  endothelium 
A)  elastic layer 
B)  basement membrane 
C)  smooth muscle 
D)  valve 
E)  endothelium

Question 17

Selecting the Exception Four of the five answers listed below are characteristics of most veins. Select the exception.

Accepted Answer

A)  blood volume reservoir 
B)  contain valves 
C)  low resistance-transport tubes 
D)  transport oxygen 
E)  low blood pressure 
A)  blood volume reservoir 
B)  contain valves 
C)  low resistance-transport tubes 
D)  transport oxygen 
E)  low blood pressure

Question 18

Because of their great elasticity, which of the following can function as blood volume reservoirs during times of low metabolic output?

Accepted Answer

A)  veins and venules 
B)  arteries 
C)  arterioles 
D)  capillaries 
E)  metarterioles 
A)  veins and venules 
B)  arteries 
C)  arterioles 
D)  capillaries 
E)  metarterioles

Question 19

Due to changes in their musculature, which vessels can vary the resistance to blood flow?

Accepted Answer

A)  arteries 
B)  veins 
C)  capillaries 
D)  arterioles 
E)  venules. 
A)  arteries 
B)  veins 
C)  capillaries 
D)  arterioles 
E)  venules.

Question 20

Baroreceptors are used for regulation of

Accepted Answer

A)  blood cell production. 
B)  blood pressure. 
C)  coronary artery flow. 
D)  blood flow to the digestive tract. 
E)  blood flow to the kidneys. 
A)  blood cell production. 
B)  blood pressure. 
C)  coronary artery flow. 
D)  blood flow to the digestive tract. 
E)  blood flow to the kidneys.

Exam 7: Circulation: the Heart and Blood Vessels

Which structure of the heart is attacked by the immune system in a case of rheumatic fever?

The most dangerous arrhythmia is

Following balloon angioplasty, a small wire cylinder known as a ____ may be inserted to keep the artery open.

Which of the following vessels offers more resistance to blood flow than the others?

The cardiac muscle of the heart is called the

Diastolic pressure is

What is the average cardiac output from each ventricle in one minute?

Baroreceptors are located in the

Warning signs of a heart attack do NOT include

Which characteristic of capillaries aids in the process of diffusion?

The semilunar valves are located between the

Blood in arteries

Rheumatic fever is caused by infections from which genus of bacteria?

Blood pressure is measured in

Heart excitation originates in the

Which of the following is NOT found in an arteriole?

Selecting the Exception Four of the five answers listed below are characteristics of most veins. Select the exception.

Because of their great elasticity, which of the following can function as blood volume reservoirs during times of low metabolic output?

Due to changes in their musculature, which vessels can vary the resistance to blood flow?

Baroreceptors are used for regulation of

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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