Deck 15: The Circulation of the Blood

Question 1

Which of the following is not true of hepatic portal circulation?

A) It collects blood from digestive organs and sends that blood to the liver.
B) The blood in the liver from the hepatic portal system has already passed through one set of capillaries.
C) It is important in maintaining blood homeostasis.
D) All of the above are true of hepatic portal circulation.

Answer 1

All of the above are true of hepatic portal circulation.

Question 2

What is a condition in which an artery has become abnormally widened because of a weakness in the arterial wall?

A) aneurysm
B) ischemia
C) gangrene
D) phlebitis

Answer 2

aneurysm

Question 3

Which structure in the fetus carries oxygen-rich blood from the mother to the baby?

A) umbilical vein
B) umbilical artery
C) ductus arteriosus
D) ductus venosus

Answer 3

umbilical vein

Question 4

Which structure in the fetus allows blood to bypass the immature liver?

A) foramen ovale
B) ductus venosus
C) ductus arteriosus
D) umbilical vein

Question 5

Which of the following is the smooth inner layer of the blood vessels?

A) tunica media
B) tunica intima
C) endothelium
D) both B and C

Question 6

Which of the following is a condition in which blood pools in the veins because the valves have become incompetent?

A) an aneurysm
B) phlebitis
C) varicose veins
D) gangrene

Question 7

Which structure in the fetus connects the aorta and the pulmonary artery?

A) umbilical vein
B) umbilical artery
C) ductus arteriosus
D) ductus venosus

Question 8

Which of the following is not true of veins?

A) The endothelium has one-way valves.
B) They have a thinner tunica media than arteries.
C) They carry blood away from the heart.
D) They receive blood from venules.

Question 9

A large area of necrosis that has progressed to decay is called

A) an aneurysm
B) ischemia
C) gangrene
D) phlebitis

Question 10

The first blood vessel of systemic circulation is the

A) pulmonary artery
B) aorta
C) superior vena cava
D) inferior vena cava

Question 11

Blood pressure is lowest in the

A) capillaries
B) large veins
C) large arteries
D) small arteries

Question 12

The first blood vessel of pulmonary circulation is the

A) pulmonary artery
B) aorta
C) superior vena cava
D) pulmonary vein

Question 13

Blood pressure is highest in the

A) capillaries
B) large veins
C) large arteries
D) small veins

Question 14

Blood moves through blood vessels in which of the following sequences,starting from the heart?

A) arteries arterioles venules capillaries veins
B) arterioles arteries capillaries vein s venules
C) arteries arterioles capillaries venules veins
D) arteries capillaries veins arterioles venules

Question 15

Which of the following is not true of capillaries?

A) They are made up only of endothelium.
B) The endothelium has one-way valves.
C) They receive blood from arterioles.
D) They are where material is exchanged with the cells.

Question 16

Which of the following is an inflammation of a vein?

A) an aneurysm
B) phlebitis
C) varicose veins
D) gangrene

Question 17

Which blood vessel muscle layer is usually thicker in the arteries than in veins?

A) tunica media
B) tunica intima
C) tunica externa
D) endothelium

Question 18

Which layer of the blood vessel is made of tough connective tissue?

A) tunica media
B) tunica externa
C) tunica intima
D) endothelium

Question 19

Which structure in the fetus allows blood to be shunted from the right atrium to the left atrium?

A) foramen ovale
B) ductus venosus
C) ductus arteriosus
D) umbilical vein

Question 20

Which of the following is not true of arteries?

A) The endothelium has one-way valves.
B) They have a thicker tunica media than veins.
C) They carry blood away from the heart.
D) They carry blood to arterioles.

Question 21

Polycythemia has a direct effect on which of the following factors that influence blood pressure?

A) blood volume
B) strength of the heart contraction
C) heart rate
D) blood viscosity

Question 22

The tunica intima is also called the endothelium.

Question 23

Which blood vessel carries blood away from the capillaries?

A) arteries
B) arterioles
C) venules
D) both A and B

Question 24

Which factor influences resistance to blood flow?

A) blood viscosity
B) blood volume
C) tension of the muscles in the wall of the blood vessels
D) both A and C

Question 25

The tunica media in the arteries helps maintain blood pressure and blood distribution in the body.

Question 26

Which term refers to a decrease in blood supply to a tissue,leading to gradual cell death?

A) an aneurysm
B) ischemia
C) gangrene
D) phlebitis

Question 27

Which type of shock results from blood loss?

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

Question 28

Which type of shock results from the effects of infectious agents,such as bacteria,releasing toxins in the blood?

A) cardiogenic shock
B) neurogenic shock
C) anaphylactic shock
D) septic shock

Question 29

Which type of shock results from any type of heart failure?

A) cardiogenic shock
B) neurogenic shock
C) anaphylactic shock
D) septic shock

Question 30

Which of the following does not increase the risk of developing hypertension?

A) genetics
B) being female
C) being African American
D) All of the above increase the risk of developing hypertension.

Question 31

Which of the following is not a location at which the pulse can be felt in the lower limb?

A) popliteal artery
B) femoral artery
C) dorsalis pedis artery
D) brachial artery

Question 32

The tunica externa is much thicker in the arteries,which enables them to deal with the higher blood pressure.

Question 33

Which of the following is not a location at which the pulse can be felt in the upper limb?

A) popliteal artery
B) radial artery
C) axillary artery
D) brachial artery

Question 34

Capillaries empty into arterioles.

Question 35

Which type of shock results from an acute type of allergic reaction?

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

Question 36

Another term for a cerebrovascular accident is

A) a stroke
B) an aneurysm
C) a varix
D) phlebitis

Question 37

Which type of shock results from a loss of sympathetic impulses sent to the smooth muscles of the blood vessels?

A) cardiogenic shock
B) neurogenic shock
C) anaphylactic shock
D) septic shock

Question 38

Which blood vessel carries blood toward the capillaries?

A) arteries
B) arterioles
C) venules
D) both A and B

Question 39

What is the direct cause of blood pressure?

A) blood volume
B) strength of the heart contraction
C) heart rate
D) blood viscosity

Question 40

An increase in which of the following can actually decrease blood pressure?

A) blood volume
B) strength of the heart contraction
C) heart rate
D) blood viscosity

Question 41

The two umbilical arteries carry nutrients and oxygen from the mother to the fetus.

Question 42

A varix is a section of an artery that has become abnormally wide.

Question 43

The ductus arteriosus acts as a shunt for blood around the immature fetal liver.

Question 44

Arteriosclerosis can lead to ischemia.

Question 45

Ischemia can lead to necrosis and gangrene.

Question 46

The precapillary sphincter regulates the amount of blood that flows into a capillary bed.

Question 47

Although capillaries have no tunica media,both the tunica intima and tunica externa are about the same thickness as they are in arterioles and venules.

Question 48

Blood leaving the hepatic portal system has been detoxified and has the homeostatic level of glucose.It drains into the abdominal aorta so it can be distributed throughout the rest of the body.

Question 49

The single umbilical vein carries metabolic waste and carbon dioxide from the fetus to the mother.

Question 50

The ductus arteriosus connects the aorta and the pulmonary vein.

Question 51

The two characteristics true of all arteries are (1)they carry blood away from the heart and (2)they carry blood that is rich in oxygen.

Question 52

Veins serve as the blood reservoirs for the body.

Question 53

Incompetent valves in veins cause varices.

Question 54

The tunica intima of both veins and arteries has one-way valves to prevent the backflow of blood.

Question 55

The two characteristics true of all veins are (1)they carry blood back to the heart and (2)they carry blood that is oxygen-poor.

Question 56

A saclike extension in an arterial wall that developed because of weakness in the wall is called an aneurysm.

Question 57

A thrombus (blood clot)is more likely to form in an artery than in a vein because of the greater blood flow through the artery.

Question 58

The term phlebitis refers to an inflammation of a vein.

Question 59

In systemic circulation,arteries carry oxygen-rich blood.In pulmonary circulation,arteries carry oxygen-poor blood.

Question 60

Blood that drains into the liver from the hepatic portal system has already been through one set of capillaries.

Question 61

If the foramen ovale and the ductus arteriosus remain functioning after birth,the blood may bypass the lungs and the baby won't receive the proper amount of oxygen.

Question 62

Because of the expansion of the lungs,deep breathing hinders the return of blood to the heart.

Question 63

As cardiac output goes up,blood pressure goes up.

Question 64

Very high blood pressure and very low blood pressure can be damaging to the body.

Question 65

The foramen ovale shunts blood from the right ventricle into the left ventricle.

Question 66

A person with heart failure can have a dangerously low central venous pressure.

Question 67

The presence of a pulse depends on the beating of the heart.

Question 68

Blood pressure and blood volume are inversely related.

Question 69

An increase in heart rate always increases blood pressure.

Question 70

The blood pressure in the inferior and superior venae cavae is essentially zero.

Question 71

A strong heartbeat and normal arterial blood pressure assist in getting venous blood back to the heart.

Question 72

As stroke volume goes up,blood pressure goes up.

Question 73

Incompetent valves in veins can make it difficult for blood to return to the heart.

Question 74

A person who has suffered a serious loss of blood would be most at risk for cardiogenic shock.

Question 75

Circulatory shock can be defined as the failure of the circulatory system to deliver an adequate amount of oxygen to the tissues.

Question 76

All other factors being equal,a person with polycythemia has higher blood pressure than someone without that condition.

Question 77

A pulse can be found in the head and neck,the arms,and the legs.

Question 78

Blood pressure is highest in the aorta and lowest in capillaries.

Question 79

The most distal pulse can be found in the popliteal artery behind the knee.

Question 80

An increase in heart rate increases blood pressure only if there is no change in stroke volume.