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Blood in the pulmonary artery would have ___ oxygen and ___ carbon dioxide than blood in the pulmonary vein.


A) more;less
B) the same;less
C) less;more
D) more;the same
E) less;less

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In mammals,a muscular _______________ expands the chest,pulling air into the lungs.


A) chest cavity
B) rib cage
C) trachea
D) diaphragm
E) sternum

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Why could you donate plasma twice a week?


A) Plasma contains only proteins and fluid which can be replaced quickly.
B) Plasma contains platelets which can be replaced quickly.
C) Plasma contains red blood cells which can be replaced quickly.
D) Plasma contains only water and can be rapidly replaceD.
E) Plasma is regenerated from the blood cells injected back into the donor.

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In the systemic circulation,____________________ is expelled from the blood and __________________ is picked up.


A) oxygen;nitrogen
B) carbon dioxide;nitrogen
C) carbon dioxide;oxygen
D) oxygen;carbon dioxide
E) nitrogen;oxygen

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In the pulmonary circulation,___________________ is expelled from the blood and _________________ is picked up.


A) nitrogen;oxygen
B) oxygen;carbon dioxide
C) oxygen;nitrogen
D) carbon dioxide;nitrogen
E) carbon dioxide;oxygen

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Ice fish would have which kind of circulatory systems?


A) closed with a two-chambered heart
B) open
C) closed with a single-chambered heart
D) closed with a three-chambered heart
E) closed with a four-chambered heart

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Vertebrates with a two-chambered heart include


A) mollusks.
B) reptiles.
C) birds.
D) fishes.
E) mammals.

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The large vessels that carry blood to the heart are


A) arteries.
B) veins.
C) capillaries.
D) lymph vessels.
E) sieve tubes.

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The chamber of the heart that is the most powerful is the


A) left atrium.
B) left ventricle.
C) right atrium.
D) right ventricle.
E) No answer is correct.

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An increase in the number of red blood cells is called anemia.

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Systolic pressure reflects the force caused by


A) the contraction of the atriA.
B) the relaxation of the atria.
C) the relaxation of the ventricles.
D) the contraction of the ventricles.
E) the heart ratE.

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Aerobic respiration consumes ____________ gas and generates ___________________ gas as a waste product.


A) oxygen;carbon dioxide
B) nitrogen;carbon dioxide
C) carbon dioxide;nitrogen
D) oxygen;nitrogen
E) carbon dioxide;oxygen

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The upper respiratory tract is composed of


A) the nose,pharynx,and tracheA.
B) the nose,larynx,and trachea.
C) the nose,trachea,and lungs.
D) the nose,pharynx,and larynx.
E) the nose and pharynx.

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The simplest animals with a closed circulatory system are


A) birds.
B) amphibians.
C) annelids.
D) fishes.
E) reptiles.

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Which drugs would be prescribed to a person who is at risk of forming a blood clot?


A) a beta-blocker
B) aspirin
C) a diuretic
D) a beta-blocker and a diuretic
E) aspirin and a diuretic

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Medicine is taken to relieve pain.In which system will the medicine reach the site the fastest?


A) open circulatory system
B) closed circulatory system
C) no muscular system
D) incomplete digestive system
E) complete digestive system

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What drives the movement of carbon dioxide from tissue into the bloodstream?


A) active transport against a concentration gradient
B) facilitated diffusion down a concentration gradient
C) diffusion down a concentration gradient
D) facilitated diffusion against a concentration gradient
E) the heart pumping the carbon dioxide into the bloodstream

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Why could a human not absorb enough oxygen through the skin,as opposed to creatures like sea anemones?


A) Our surface area to volume ratio is too high for oxygen to reach all tissues.
B) Sea anemones live in water,and there is more oxygen available.
C) Our surface area to volume ratio is too low for oxygen to reach all tissues.
D) Our capillaries do not come close enough to the skin to absorb oxygen.
E) Sea anemones have a larger heart relative to the rest of their body.

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If blood pressure is too high,the brain _________ heart rate and causes blood vessels to _________.


A) increases;dilate
B) increases;constrict
C) decreases;constrict
D) decreases;dilate
E) increases;rupture

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If you wanted to change airflow to alveoli,what tissue would you need to target?


A) connective
B) nonvascular
C) muscle
D) nervous
E) vascular

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