Question 1

Which description best fits that of an open circulatory system?

Accepted Answer

A)  The heart pumps hemolymph into tissue spaces that are enlarged into saclike sinuses.
B)  The heart pumps blood across gills and then into tissue spaces that are enlarged into saclike sinuses.
C)  Gases diffuse across a cutaneous membrane and then move into tissue spaces that are enlarged into saclike sinuses.
D)  The heart pumps hemolymph into tissue spaces that route the fluid across the gills for gas exchange.E) A) and B)
F) None of the above

Question 2

The vessels in our circulatory system that allow molecules to diffuse across their walls to tissues are

Accepted Answer

A)  arteries.
B)  veins.
C)  capillaries.
D)  lymph vessels.
E)  venules.F) C) and D)
G) D) and E)

Question 3

The human heart is composed of

Accepted Answer

A)  muscle fibers called myocardium.
B)  an outer membranous sac called the pericardium.
C)  endocardium.
D)  cardiac muscle fibers.
E)  All of the choices are correct.F) All of the above
G) D) and E)

Question 4

During capillary exchange,what will occur if the blood pressure at the arterial end were to decrease and become lower than the osmotic pressure?

Accepted Answer

A)  Water would not leave the blood stream which could disrupt the movement of oxygen and carbon dioxide through the membrane.
B)  Water will leave the blood stream allowing oxygen and carbon dioxide to diffuse out of the blood stream.
C)  Oxygen and carbon dioxide will increase their rate of diffusion into the interstitial fluid.
D)  Nothing will occur because the blood pressure does not impact the movement of gases.E) A) and B)
F) A) and C)

Question 5

Identify the correct sequence of events for the formation of a blood clot. 
a.Platelets get lodged at the site of vessel injury and partially seal the leak.
B.Thrombin forms long threads known as fibrin.
C.The fibrin framework will trap red blood cells in the clot to seal the leak.
D.Prothrombin activator converts prothrombin into thrombin.
E.Platelets release prothrombin activator.
F.Fibrin winds around the platelet plug forming a framework for the clot.

Accepted Answer

A)  a - e - d - b - f - c
B)  e - d - b - f - c - a
C)  a- b - f - c - e - d
D)  f - c - d - a - e - bE) A) and D)
F) A) and B)

Question 6

Identify the correct flow of blood through a one-circuit system.

Accepted Answer

A)  ventricle - gill capillaries - systemic capillaries - sinus venosus - atrium
B)  ventricle - systemic capillaries - gill capillaries - sinus venosus - atrium
C)  ventricle - gill capillaries - systemic capillaries - atrium - sinus venosus
D)  ventricle - pulmonary capillaries - atrium - aorta - systemic capillariesE) C) and D)
F) B) and C)

Question 7

The structure that absorbs nutrients from the small intestines and delivers the nutrients in the blood to the liver is the

Accepted Answer

A)  hepatic portal artery.
B)  hepatic portal vein.
C)  renal vein.
D)  None of the choices are correct.E) A) and B)
F) None of the above

Question 8

Which would you find in the heart of a fish?

Accepted Answer

A)  one atrium and one ventricle
B)  two atria and one ventricle
C)  one atrium and two ventricles
D)  two atria and two ventricles
E)  two atria and a partially divided ventricleF) A) and B)
G) B) and C)

Question 9

What would cause you to believe that someone has a heart murmur?

Accepted Answer

A)  an irregular ECG
B)  irregular heart sounds instead of sharp lub-dub sounds
C)  irregular heart beats
D)  low blood pressureE) None of the above
F) A) and B)

Question 10

Identify the correct pathway of blood flow through a two-circuit pathway.

Accepted Answer

A)  ventricle - systemic circuit - right atrium ventricle - pulmonary circuit - left atrium
B)  right atrium - ventricle - systemic circuit left atrium - ventricle - pulmonary circuit
C)  ventricle - gill capillaries - aorta - systemic circuit - atrium
D)  right atrium - systemic circuit - ventricle left atrium - pulmonary circuit - ventricle
E)  ventricle - systemic circuit - left atrium ventricle - pulmonary circuit - right atriumF) A) and B)
G) A) and C)

Question 11

Which of the following has a four-chambered heart like humans?

Accepted Answer

A)  birds
B)  crocodiles
C)  amphibians
D)  birds and crocodiles.
E)  All of the choices are correct.F) A) and B)
G) A) and C)

Question 12

Describe the events that occur in the clotting of blood by choosing the correct sequence of statements that outlines the process. 1.Platelets and injured tissue release prothrombin activator.
2) The activated fragments join end-to-end,forming long threads.
3) Platelets clump at the sight of puncture and partially seal the leak.
4) Fibrin threads wind around the platelet plug in the damaged area and provide a framework for the clot.
5) Thrombin,acting as an enzyme,severs two amino acid chains (activated fragments) from each fibrinogen molecule.
6) Prothrombin activator converts prothrombin to thrombin.
7) Red blood cells are trapped within the fibrin framework forming a clot.

Accepted Answer

A)  Sequence: 7,4,5,2,3,1,6
B)  Sequence: 3,1,6,5,2,4,7
C)  Sequence: 4,5,6,7,3,2,1
D)  Sequence: 1,2,6,7,4,3,5E) All of the above
F) A) and D)

Question 13

Cnidaria and flatworms exchange gases and remove wastes by way of their

Accepted Answer

A)  open circulatory systems.
B)  closed circulatory systems.
C)  gastrovascular cavities.
D)  moist skin surfaces.
E)  respiratory and excretory systems.F) A) and B)
G) B) and C)

Question 14

The pacemaker of the cardiac conduction system is the

Accepted Answer

A)  atrioventricular node.
B)  sinoatrial node.
C)  medulla oblongata.
D)  Purkinje fibers.E) C) and D)
F) B) and C)

Question 15

The leading cause of preventable death in the United States is cardiovascular disease.Which of the following are lifestyle modifications that would lower a person's risk of CVD?

Accepted Answer

A)  not smoking
B)  lose weight
C)  lower fat intake
D)  All of the choices are means of lowering risk for CVD.E) A) and B)
F) A) and C)

Question 16

What would you find in the heart of a human?

Accepted Answer

A)  one atrium and one ventricle
B)  two atria and one ventricle
C)  one atrium and two ventricles
D)  two atria and two ventricles
E)  two atria and a partially divided ventricleF) A) and D)
G) A) and E)

Question 17

What is the correct order of blood flow through the cardiovascular system?

Accepted Answer

A)  Heart - artery - arterioles - capillaries - venules - veins
B)  Heart - arterioles - artery - capillary - venules - veins
C)  Heart - artery - arterioles - capillaries - veins - venules
D)  Capillaries - venules - veins - heart - arterioles - artery
E)  Capillaries - arterioles - artery - heart - venules - veinsF) A) and B)
G) B) and E)

Question 18

The coronary arteries are important because they serve the

Accepted Answer

A)  intestine and liver.
B)  brain.
C)  lungs.
D)  heart.
E)  urinary tract.F) C) and D)
G) B) and D)

Question 19

Which group of vertebrates will lack a pulmonary circuit?

Accepted Answer

A)  fish
B)  frogs
C)  birds
D)  annelids
E)  mammalsF) A) and B)
G) A) and C)

Question 20

What two forces control the movement of fluid through the capillary wall?

Accepted Answer

A)  the thickness of the capillary wall and the number of cilia
B)  blood pressure and osmotic pressure
C)  the oxygen and nitrogen concentration
D)  the number of veins and arteriesE) None of the above
F) B) and D)

Exam 32: Circulation and Cardiovascular Systems

The coronary arteries are important because they serve the

Correct Answer
verified

Identify the correct flow of blood through a one-circuit system.

Correct Answer
verified

Which would you find in the heart of a fish?

Correct Answer
verified

The vessels in our circulatory system that allow molecules to diffuse across their walls to tissues are

Correct Answer
verified

The pacemaker of the cardiac conduction system is the

Correct Answer
verified

The structure that absorbs nutrients from the small intestines and delivers the nutrients in the blood to the liver is the

Correct Answer
verified

Which group of vertebrates will lack a pulmonary circuit?

Correct Answer
verified

Identify the correct pathway of blood flow through a two-circuit pathway.

Correct Answer
verified

During capillary exchange,what will occur if the blood pressure at the arterial end were to decrease and become lower than the osmotic pressure?

Correct Answer
verified

Correct Answer
verified

Cnidaria and flatworms exchange gases and remove wastes by way of their

Correct Answer
verified

The human heart is composed of

Correct Answer
verified

Which description best fits that of an open circulatory system?

Correct Answer
verified

What is the correct order of blood flow through the cardiovascular system?

Correct Answer
verified

Which of the following has a four-chambered heart like humans?

Correct Answer
verified

What would you find in the heart of a human?

Correct Answer
verified

What would cause you to believe that someone has a heart murmur?

Correct Answer
verified

What two forces control the movement of fluid through the capillary wall?

Correct Answer
verified

Correct Answer
verified

The leading cause of preventable death in the United States is cardiovascular disease.Which of the following are lifestyle modifications that would lower a person's risk of CVD?

Correct Answer
verified

Exam 32: Circulation and Cardiovascular Systems

The coronary arteries are important because they serve the

Correct AnswerverifiedShow Answer

Identify the correct flow of blood through a one-circuit system.

Correct AnswerverifiedShow Answer

Which would you find in the heart of a fish?

Correct AnswerverifiedShow Answer

The vessels in our circulatory system that allow molecules to diffuse across their walls to tissues are

Correct AnswerverifiedShow Answer

The pacemaker of the cardiac conduction system is the

Correct AnswerverifiedShow Answer

The structure that absorbs nutrients from the small intestines and delivers the nutrients in the blood to the liver is the

Correct AnswerverifiedShow Answer

Which group of vertebrates will lack a pulmonary circuit?

Correct AnswerverifiedShow Answer

Identify the correct pathway of blood flow through a two-circuit pathway.

Correct AnswerverifiedShow Answer

During capillary exchange,what will occur if the blood pressure at the arterial end were to decrease and become lower than the osmotic pressure?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Cnidaria and flatworms exchange gases and remove wastes by way of their

Correct AnswerverifiedShow Answer

The human heart is composed of

Correct AnswerverifiedShow Answer

Which description best fits that of an open circulatory system?

Correct AnswerverifiedShow Answer

What is the correct order of blood flow through the cardiovascular system?

Correct AnswerverifiedShow Answer

Which of the following has a four-chambered heart like humans?

Correct AnswerverifiedShow Answer

What would you find in the heart of a human?

Correct AnswerverifiedShow Answer

What would cause you to believe that someone has a heart murmur?

Correct AnswerverifiedShow Answer

What two forces control the movement of fluid through the capillary wall?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The leading cause of preventable death in the United States is cardiovascular disease.Which of the following are lifestyle modifications that would lower a person's risk of CVD?

Correct AnswerverifiedShow Answer

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