Question 1

Blood pressure is _______ than osmotic pressure at the arterial end of a capillary bed, which is where the process of _______ occurs.

Accepted Answer

A)  greater; reabsorption 
B)  greater; filtration 
C)  lesser; reabsorption 
D)  lesser; filtration 
E)  lesser; edema 
A)  greater; reabsorption 
B)  greater; filtration 
C)  lesser; reabsorption 
D)  lesser; filtration 
E)  lesser; edema

Question 2

Blood clotting pathways cause the conversion of _______ to _______.

Accepted Answer

A)  vitamin K; prothrombin 
B)  fibrin; fibrinogen 
C)  thrombin; prothrombin 
D)  prothrombin; thrombin 
E)  fibrinogen; thrombin 
A)  vitamin K; prothrombin 
B)  fibrin; fibrinogen 
C)  thrombin; prothrombin 
D)  prothrombin; thrombin 
E)  fibrinogen; thrombin

Question 3

The purpose of the AV node is to _______, and the purpose of the Purkinje fibers is to _______.

Accepted Answer

A)  create simultaneous atrial and ventricular depolarization; speed up transmission of the cardiac impulse into the ventricle 
B)  delay ventricular depolarization relative to atrial depolarization; insulate the cardiac impulse from the general ventricular fibers 
C)  delay ventricular depolarization relative to atrial depolarization; ensure the cardiac impulse spreads rapidly and evenly throughout the ventricles 
D)  delay atrial depolarization relative to ventricular depolarization; transmit the cardiac impulse to very small, localized groups of ventricular fibers 
E)  initiate each heartbeat; transmit impulses to the atria 
A)  create simultaneous atrial and ventricular depolarization; speed up transmission of the cardiac impulse into the ventricle 
B)  delay ventricular depolarization relative to atrial depolarization; insulate the cardiac impulse from the general ventricular fibers 
C)  delay ventricular depolarization relative to atrial depolarization; ensure the cardiac impulse spreads rapidly and evenly throughout the ventricles 
D)  delay atrial depolarization relative to ventricular depolarization; transmit the cardiac impulse to very small, localized groups of ventricular fibers 
E)  initiate each heartbeat; transmit impulses to the atria

Question 4

In a human being under normal conditions, the bone marrow can produce about 2 million _______ every second.

Accepted Answer

red blood

Question 5

The semilunar (i.e., pulmonary and aortic) valves open as a direct result of

Accepted Answer

A)  arterial diastole. 
B)  atrial systole. 
C)  ventricular diastole. 
D)  ventricular systole. 
E)  stimulation by the autonomic nervous system. 
A)  arterial diastole. 
B)  atrial systole. 
C)  ventricular diastole. 
D)  ventricular systole. 
E)  stimulation by the autonomic nervous system.

Question 6

In humans, oxygenated blood is transported from the lung to the heart by the

Accepted Answer

A)  pulmonary artery. 
B)  pulmonary vein. 
C)  superior vena cava. 
D)  inferior vena cava. 
E)  coronary artery. 
A)  pulmonary artery. 
B)  pulmonary vein. 
C)  superior vena cava. 
D)  inferior vena cava. 
E)  coronary artery.

Question 7

Which of the following heart regions is third in sequence of action potential propagation during a normal heartbeat?

Accepted Answer

A)  Bundle of His 
B)  Atrioventricular node 
C)  Purkinje fibers 
D)  Sinoatrial node 
E)  Ventricular muscle cells 
A)  Bundle of His 
B)  Atrioventricular node 
C)  Purkinje fibers 
D)  Sinoatrial node 
E)  Ventricular muscle cells

Question 8

Which of the following is not a component of plasma?

Accepted Answer

A)  Gases 
B)  Ions 
C)  Nutrient molecules 
D)  Red blood cells 
E)  Proteins 
A)  Gases 
B)  Ions 
C)  Nutrient molecules 
D)  Red blood cells 
E)  Proteins

Question 9

Which of the following regions of the vascular bed is the actual site of gas exchange with surrounding tissue?

Accepted Answer

A)  Arteries 
B)  Capillaries 
C)  Lymphatic vessels 
D)  Veins 
E)  Venules 
A)  Arteries 
B)  Capillaries 
C)  Lymphatic vessels 
D)  Veins 
E)  Venules

Question 10

The lifetime of an individual red blood cell is approximately

Accepted Answer

A)  4 hours. 
B)  4 days. 
C)  4 weeks. 
D)  40 days. 
E)  4 months. 
A)  4 hours. 
B)  4 days. 
C)  4 weeks. 
D)  40 days. 
E)  4 months.

Question 11

Pressure levels in the aorta alternate between a high level called _______ and a low level called _______.

Accepted Answer

The answer of Pressure levels in the aorta alternate between...

Question 12

In vertebrates, exchange of substances between the blood and the interstitial fluids occurs in the

Accepted Answer

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

Question 13

The benefit provided by a heart with two atria is

Accepted Answer

A)  the separation of oxygenated and deoxygenated blood. 
B)  that blood moving to the body tissues is at a higher pressure than it would be if it had flowed through the lungs first. 
C)  that blood moving to the lungs is at a higher pressure than it would be if it had flowed through the body first. 
D)  that blood moving to the body tissues is at a lower pressure than it would be if it had flowed through the lungs first. 
E)  that there are two muscular regions for pumping. 
A)  the separation of oxygenated and deoxygenated blood. 
B)  that blood moving to the body tissues is at a higher pressure than it would be if it had flowed through the lungs first. 
C)  that blood moving to the lungs is at a higher pressure than it would be if it had flowed through the body first. 
D)  that blood moving to the body tissues is at a lower pressure than it would be if it had flowed through the lungs first. 
E)  that there are two muscular regions for pumping.

Question 14

In humans, contraction of the right ventricle pumps blood directly into the _______ artery.

Accepted Answer

The answer of In humans, contraction of the right ventricle...

Question 15

As blood enters the capillaries from the arterioles, blood pressure _______ and osmotic potential _______.

Accepted Answer

A)  decreases; decreases 
B)  decreases; increases 
C)  increases; decreases 
D)  decreases; remains steady 
E)  increases; remains steady 
A)  decreases; decreases 
B)  decreases; increases 
C)  increases; decreases 
D)  decreases; remains steady 
E)  increases; remains steady

Question 16

In which of the following would the highest blood pressure be recorded?

Accepted Answer

A)  In the ventricle supplying blood to the gills of a fish 
B)  In the anterior dorsal artery of an ant 
C)  In the pulmonary vein of a frog 
D)  In the ventricle supplying blood to the systemic circuit of a bird 
E)  In the vessels leaving the gills of a clam 
A)  In the ventricle supplying blood to the gills of a fish 
B)  In the anterior dorsal artery of an ant 
C)  In the pulmonary vein of a frog 
D)  In the ventricle supplying blood to the systemic circuit of a bird 
E)  In the vessels leaving the gills of a clam

Question 17

With regard to the circulatory system, what does the acronym MAP represent?

Accepted Answer

A)  Monoadenosine phosphate 
B)  Main Arterial Pathways 
C)  Mean Arterial Pressure 
D)  Minor Anterior Pillus 
E)  Moderate Albumen Production 
A)  Monoadenosine phosphate 
B)  Main Arterial Pathways 
C)  Mean Arterial Pressure 
D)  Minor Anterior Pillus 
E)  Moderate Albumen Production

Question 18

The human heart pumps blood to the pulmonary and the systemic circuits. Describe the path that blood takes as it moves through the circulatory system, starting at the right ventricle.

Accepted Answer

Blood from the right ventricle exits thr

Question 19

In normal humans the hematocrit, or percentage of the blood made up of cells, is about _______ percent.

Accepted Answer

A)  10 
B)  25 
C)  40 
D)  70 
E)  90 
A)  10 
B)  25 
C)  40 
D)  70 
E)  90

Question 20

Blockage of a coronary artery can cause

Accepted Answer

A)  a heart attack. 
B)  stroke. 
C)  fainting. 
D)  edema. 
E)  anemia. 
A)  a heart attack. 
B)  stroke. 
C)  fainting. 
D)  edema. 
E)  anemia.

Exam 50: Circulatory Systems

Blood pressure is _______ than osmotic pressure at the arterial end of a capillary bed, which is where the process of _______ occurs.

Blood clotting pathways cause the conversion of _______ to _______.

The purpose of the AV node is to _______, and the purpose of the Purkinje fibers is to _______.

In a human being under normal conditions, the bone marrow can produce about 2 million _______ every second.

The semilunar (i.e., pulmonary and aortic) valves open as a direct result of

In humans, oxygenated blood is transported from the lung to the heart by the

Which of the following heart regions is third in sequence of action potential propagation during a normal heartbeat?

Which of the following is not a component of plasma?

Which of the following regions of the vascular bed is the actual site of gas exchange with surrounding tissue?

The lifetime of an individual red blood cell is approximately

Pressure levels in the aorta alternate between a high level called _______ and a low level called _______.

In vertebrates, exchange of substances between the blood and the interstitial fluids occurs in the

The benefit provided by a heart with two atria is

In humans, contraction of the right ventricle pumps blood directly into the _______ artery.

As blood enters the capillaries from the arterioles, blood pressure _______ and osmotic potential _______.

In which of the following would the highest blood pressure be recorded?

With regard to the circulatory system, what does the acronym MAP represent?

The human heart pumps blood to the pulmonary and the systemic circuits. Describe the path that blood takes as it moves through the circulatory system, starting at the right ventricle.

In normal humans the hematocrit, or percentage of the blood made up of cells, is about _______ percent.

Blockage of a coronary artery can cause

Studying Life

Small Molecules and the Chemistry of Life

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Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

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The Mammalian Nervous System: Structure and Higher Function

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Gas Exchange in Animals

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Filters

Blood pressure is _ than osmotic pressure at the arterial end of a capillary bed, which is where the process of _ occurs.

Blood clotting pathways cause the conversion of _ to _.

The purpose of the AV node is to _, and the purpose of the Purkinje fibers is to _.

Pressure levels in the aorta alternate between a high level called _ and a low level called _.

As blood enters the capillaries from the arterioles, blood pressure _ and osmotic potential _.