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The vessels that supply the lower limbs are the


A) common carotids.
B) internal iliac arteries.
C) subclavian arteries
D) external iliac arteries.
E) vertebral arteries.

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

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The ________ is composed of an endothelium and a subendothelial layer made up of a thin layer of areolar connective tissue.


A) tunica media
B) tunica externa
C) tunica intima
D) tunica adventitia
E) None of the answers is correct.

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

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The artery that bifurcates into the right subclavian artery and the right common carotid artery is the


A) brachiocephalic artery.
B) right common iliac artery.
C) right brachial artery.
D) right coronary artery.
E) superior vena cava.

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

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The branch of the external carotid that is responsible for supplying the teeth, gums, nasal cavity, and meninges is the ________ artery.


A) jugular
B) maxillary
C) lingual
D) occipital
E) internal carotid

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

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When blood flow increases stretch of specific arterioles in the kidney, the arterioles reflexively contract to keep blood pressure from getting too high. This is an example of the myogenic response.

A) True
B) False

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The arteries that anastomose and form the two arterial arches in the palm are the ________ and ________ arteries.


A) axillary; subclavian
B) radial; ulnar
C) radial; brachial
D) ulnar; brachial
E) axillary; brachial

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

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Which part of the circulatory system holds the largest amount of blood?


A) Pulmonary arteries
B) Pulmonary veins
C) Systemic arteries
D) Systemic veins

E) C) and D)
F) A) and B)

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An increase in blood vessel diameter would lead to a decrease in blood flow.

A) True
B) False

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The artery that will eventually subdivide to form the posterior cerebral arteries is the ________ artery.


A) basilar
B) external carotid
C) maxillary
D) superficial temporal
E) internal carotid

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

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As an arterial pathway moves farther from the heart, the arteries


A) get smaller.
B) get larger.
C) show no change in their lumen size.

D) A) and C)
E) All of the above

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Tissue damage can trigger local release of histamine, which can


A) stimulate release of nitric oxide, a vasodilator.
B) stimulate release of nitric oxide, a vasoconstrictor.
C) inhibit release of nitric oxide, a vasodilator.
D) inhibit release of nitric oxide, a vasoconstrictor.

E) B) and C)
F) A) and D)

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Imagine a patient who loses lots of blood and therefore has less stretch of their aorta with each heartbeat. What reflex will result?


A) Baroreceptors increase firing, the vasomotor center increases firing, and skin blood vessels will dilate to cause a compensatory increase in flow.
B) Baroreceptors decrease firing, the cardioacceleratory center increases firing, and cardiac output will exhibit a compensatory increase.
C) Baroreceptors increase firing, the cardioinhibitory center increases firing, and the heart slows significantly to prevent further bleeding.
D) Baroreceptors decrease firing, the cardioinhibitory center and vasomotor centers increase firing, the heart slows, and blood is redirected.

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

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Formed primarily of tunica intima and strengthened by elastic and collagen fibers, the ________ in veins prevent blood from pooling.

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The function of the postcapillary venule is to


A) allow for diffusion of nutrients to the tissues.
B) allow for diffusion of metabolic wastes from the tissues.
C) drain the capillary bed.
D) supply metarteriole with blood.
E) allow for diffusion of nutrients and metabolic wastes.

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

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The respiratory pump assists blood movement within the veins of the trunk, because as a person inspires,


A) intra-abdominal and intrathoracic pressure both increase.
B) intra-abdominal and intrathoracic pressure both decrease.
C) intra-abdominal pressure increases and intrathoracic pressure decreases.
D) intra-abdominal pressure decreases and intrathoracic pressure increases.

E) B) and D)
F) B) and C)

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Which statement is accurate?


A) Filtration dominates at the arterial end of a capillary bed, and is driven by osmotic pressure.
B) Filtration dominates at the arterial end of a capillary bed, and is driven by hydrostatic pressure.
C) Filtration dominates at the venous end of a capillary bed, and is driven by osmotic pressure.
D) Filtration dominates at the venous end of a capillary bed, and is driven by hydrostatic pressure.

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

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Pulmonary veins carry blood toward the left atrium of the heart.

A) True
B) False

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The left suprarenal and gonadal veins differ from the right suprarenal and gonadal veins in how directly they get to the inferior vena cava.

A) True
B) False

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Pattern of blood circulation throughout the body, including systemic, pulmonary, coronary, hepatic portal, & fetal circulations. Pattern of blood circulation throughout the body, including systemic, pulmonary, coronary, hepatic portal, & fetal circulations.   -In the figure showing an anterior view of the veins, number 4 indicates the A)  left common iliac vein. B)  left cephalic vein. C)  left basilic vein. D)  left brachiocephalic vein. E)  left internal jugular vein. -In the figure showing an anterior view of the veins, number 4 indicates the


A) left common iliac vein.
B) left cephalic vein.
C) left basilic vein.
D) left brachiocephalic vein.
E) left internal jugular vein.

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

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The pulmonary trunk carries


A) oxygenated blood from the left ventricle toward the lungs.
B) oxygenated blood from the right ventricle toward the lungs.
C) oxygenated blood from the lungs toward the left atrium of the heart.
D) deoxygenated blood from the right ventricle toward the lungs.
E) deoxygenated blood from the lungs to the right atrium of the heart.

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

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