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The vertebral arteries arise from the ________.


A) thyrocervical arteries
B) right and left common carotid arteries
C) costocervical arteries
D) right and left subclavian arteries

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

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Match the vein with the appropriate description. -External jugular vein


A) Drains blood from the arm
B) Superficial vein of the head and neck
C) The posterior intercostal veins join this vein on the right side of the body
D) Deep vein that drains blood from the cranial vault
E) Formed by the union of the internal jugular and the subclavian veins

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

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Which of the following blood vessels supplies blood to the diaphragm?


A) Axillary artery
B) Intercostal artery
C) Superior phrenic artery
D) Inferior mesenteric artery
E) Gastric artery

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

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Blood is moved through the vascular system by


A) valves in the wall of the blood vessels.
B) peristalsis caused by smooth muscle in the blood vessel walls.
C) pressure gradients created by the heart.
D) osmotic pressure.
E) viscosity of the blood.

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

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The structure of a capillary wall differs from that of a vein or artery because


A) the capillary wall has only two tunics.
B) capillaries have more smooth muscle.
C) capillary walls have only endothelium and a basement membrane.
D) capillaries can constrict or dilate.
E) capillaries are impermeable to all substances.

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

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The hepatic portal vein is formed by the union of the splenic vein and the ________.


A) superior mesenteric vein
B) inferior mesenteric vein
C) hepatic vein
D) renal vein
E) gastric vein

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

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