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The chemical histamine causes capillary walls to become more permeable.Excess histamine Secretion,as might be seen in allergic responses,might lead to


A) decreased blood flow
B) edema
C) increased pain sensation
D) blood clotting
E) hypertension

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Nutrients from digested food enter the liver via the


A) hepatic portal circulation
B) hepatic vein
C) abdominal aorta
D) inferior vena cava
E) renal veins

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Describe the route of an RBC traveling from the heart to the left elbow and back to the heart.

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From the heart,the RBC will enter the as...

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Which of the following vessels supplies blood to the intestines?


A) Radial artery
B) Subclavian artery
C) Mesenteric artery
D) Coronary artery
E) Popliteal artery

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The bronchial arteries arise from the


A) left subclavian artery
B) brachiocephalic trunk
C) right subclavian artery
D) left common carotid artery
E) thoracic aorta

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The largest driving force for pulling fluid from the interstitial spaces back into the capillaries is


A) interstitial fluid hydrostatic pressure.
B) interstitial fluid osmotic pressure.
C) blood colloid osmotic pressure.
D) blood hydrostatic pressure.
E) glomerular hydrostatic pressure.

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Which of the following types of blood vessels have high,pulsing blood pressure?


A) arterioles
B) capillaries
C) venules
D) veins
E) vena cavae

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Vascular resistance depends on which of these factors? Select all that apply.


A) size of the blood vessel lumen
B) blood viscosity
C) total blood vessel length
D) glucose content of the blood

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Pericardial arteries supply blood to the


A) outer heart muscle
B) tissue of the aorta
C) tissue of the pulmonary trunk
D) tissues of the pericardial sac
E) all of these

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The pulmonary trunk divides into


A) brachiocephalic trunk and left subclavian artery
B) right and left subclavian arteries.
C) right and left pulmonary veins.
D) right and left pulmonary arteries.
E) right and left common carotid arteries.

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A blockage in the external iliac artery will reduce blood flow to the


A) external iliac artery
B) common iliac artery
C) femoral artery
D) abdominal aorta
E) ileal artery

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The layer of a blood vessel that is in direct contact with the blood is the [dropdown 1] while the layer of the vessel that is made up of smooth muscle and elastic fibers is the [dropdown 2]. Dropdown 1 choices: tunica albuginea tunica externa tunica interna tunica media tunica vasculosa Dropdown 2 choices:: tunica albuginea tunica externa tunica interna tunica media tunica vasculosa

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1.tunica i...

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Abnormal conditions such as atherosclerosis and patent (open) ductus arteriosus cause a large increase in the


A) blood colloid osmotic pressure.
B) net filtration pressure
C) pulse pressure.
D) blood hydrostatic pressure.
E) interstitial fluid hydrostatic pressure.

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Which of the following vessels drains blood from the lower leg?


A) Jugular vein
B) Superior vena cava
C) Tibial vein
D) Coronary vein
E) Inferior mesenteric vein

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The circulatory system aids in the homeostasis of the skeletal system by


A) delivering calcium
B) delivering phosphate
C) transporting hormones for bone metabolism
D) transporting hormones for production of red blood cells
E) all of the above

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Into which of the following categories would an individual with a blood pressure of 145/95 be placed?


A) Normal
B) High normal
C) Prehypertension
D) Stage 1 hypertension
E) Stage 2 hypertension

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If the foramen ovale doesn't close at birth,the result will be


A) overloading the lungs with blood
B) excessive volume in the pulmonary trunk
C) a reduction of volume in the aorta
D) introducing deoxygenated blood into the systemic circulation
E) no change in the content of the systemic or pulmonary circulations

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The cardiovascular center is located


A) in the thoracic cavity.
B) in the cerebral cortex.
C) in the cerebellum.
D) in the medulla oblongata.
E) in the hypothalamus.

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Which of the following blood vessels carries blood away from the heart to other organs?


A) arteries
B) capillaries
C) venules
D) arterioles
E) veins

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Which of the following is NOT a contribution of the cardiovascular system to other body systems?


A) Blood delivers clotting factors and WBCs that aid in hemostasis when skin is damaged.
B) Blood delivers calcium and phosphate ions that are needed for building bone extracellular matrix.
C) Blood carries carbon dioxide to body tissues and removes oxygen for use by other organs.
D) Blood carries newly absorbed nutrients and water to the liver.
E) Blood circulates cells and chemicals that carry out immune functions.

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