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The simplest animals with a closed circulatory system are:


A) Mollusks
B) Amphibians
C) Annelids
D) Fish
E) Reptiles

F) C) and E)
G) A) and C)

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A typical blood pressure reading for a young adult is 80/120.

A) True
B) False

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Blood:


A) Is a liquid connective tissue
B) Delivers food to the cells of the body
C) Delivers oxygen to the cells of the body
D) Helps remove wastes from the body
E) All are correct

F) A) and D)
G) C) and D)

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A heart murmur is caused by:


A) A greater than normal force of contraction of the right atrium
B) A constriction of the pulmonary artery
C) Blockage of the aorta
D) The heart valves not functioning properly
E) A greater than normal force of contraction of the left atrium

F) B) and E)
G) A) and B)

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The major vein receiving blood draining from all areas above the diaphragm is the:


A) Femoral vein
B) Superior vena cava
C) Pulmonary vein
D) Inferior vena cava
E) Jugular vein

F) B) and C)
G) A) and D)

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Capillary beds are networks of capillaries that connect arterioles and venules.

A) True
B) False

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Vertebrates with a three-chambered heart include:


A) Fish
B) Amphibians
C) Birds
D) Mammals
E) Annelids

F) B) and D)
G) None of the above

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Each day the human heart sends a volume of blood equal to about _____________ through the body.


A) 50000 liters
B) 1000 liters
C) 7000 liters
D) 2000 liters
E) 5000 liters

F) C) and E)
G) B) and E)

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When taking a person's blood pressure,after proper inflation of the cuff,the first pulse sound that is heard through the stethoscope indicates that blood is flowing through the artery past the cuff.The reading on the pressure gauge at this point represents:


A) That the heart is once again beating
B) The force of contraction of the atria
C) Diastolic pressure
D) Venous pressure
E) Systolic pressure

F) A) and B)
G) C) and E)

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The upper chambers of the mammalian heart are the:


A) Ventricles
B) Arteries
C) Vascular cavities
D) Atria
E) Sinuses

F) All of the above
G) A) and B)

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Diastolic pressure reflects:


A) The contraction of the atria
B) The contraction of the ventricles
C) The relaxation of the ventricles
D) The relaxation of the atria
E) The heart rate

F) B) and D)
G) All of the above

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Where would fish have the highest concentration of oxygen in their blood?


A) As it left their systemic circulation
B) As it left their heart
C) As it entered their heart
D) As it left their lungs
E) As it left their gills

F) A) and C)
G) B) and D)

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The myocardium is the:


A) Sac surrounding the heart
B) The endothelial cells lining wall of the heart
C) Artery that carries blood away from the heart
D) Artery that carries blood to the heart
E) The thick muscular layer of the wall of the heart

F) B) and C)
G) A) and E)

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The middle layer of the wall of an artery or vein is made up of:


A) Connective tissue
B) Skeletal muscle
C) Smooth muscle
D) Endothelium
E) Simple squamous epithelial cells

F) B) and D)
G) A) and C)

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A defibrillator contains two paddles that are placed on the chest of a person and an electrical shock is administered.What is this procedure treating?


A) Aneurysm
B) Heart attack due to atherosclerosis
C) Anemia
D) Tachycardia
E) Arrhythmia

F) B) and D)
G) A) and E)

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What mutations occurred in ice fish that prevent production of hemoglobin?


A) Fragmentation of both the alpha and beta genes
B) Deletion of the alpha gene and fragmentation of the beta gene
C) Deletion of both the alpha and beta genes
D) Fragmentation of the alpha gene and deletion of the beta gene
E) Destruction of red blood cells in the bone marrow

F) A) and E)
G) A) and D)

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In a coronary bypass,which of the following is being bypassed?


A) Coronary veins
B) Inferior vena cava
C) Coronary arteries
D) Superior vena cava
E) Aorta

F) B) and E)
G) None of the above

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Birds and mammals are endotherms,meaning they spend enormous amounts of energy maintaining a constant body temperature.To meet these energy needs,birds and mammals independently evolved four-chambered hearts,completing the separation of oxygen-rich from oxygen-depleted blood.How would this maximize the amount of oxygen reaching tissues?


A) Diffusion of oxygen from oxygenated blood into tissues would be increased
B) Diffusion of oxygen from oxygenated blood into tissues would be decreased
C) Less energy would be required to pump oxygen into the blood
D) Less energy would be required to pump oxygen into the tissues
E) Less energy would be required to pump oxygen into the lungs

F) C) and E)
G) D) and E)

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The human circulatory system transports blood in a one-directional circuit throughout the body.

A) True
B) False

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The narrowing of blood vessels is:


A) Vasoconstriction
B) Cardioconstriction
C) Vasodilation
D) Cardiodilation

E) A) and B)
F) All of the above

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