A) oxygen-rich blood back to the heart
B) oxygen-poor blood back to the heart
C) oxygen-rich blood away from the heart
D) oxygen-poor blood away from the heart
E) oxygen-rich blood to and from the heart
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Multiple Choice
A) 1
B) 2
C) 3
D) 4
E) 5
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Multiple Choice
A) atrioventricular
B) aortic
C) pulmonary
D) aortic and pulmonary
E) atrioventricular and aortic
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Multiple Choice
A) closing of the atrioventricular valves
B) closing of the pulmonary valve
C) closing of the aortic valve
D) the contraction of the left ventricle
E) the contraction of the right ventricle
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Multiple Choice
A) epiglottis; E
B) pharynx; B
C) glottis; C
D) epiglottis; C
E) trachea; E
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Multiple Choice
A) frog
B) pig
C) bird
D) grasshopper
E) pig and a bird
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Multiple Choice
A) atherosclerosis
B) sudden cardiac arrest
C) congenital heart defects
D) coronary heart diseases
E) hypertrophic cardiac defects
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Multiple Choice
A) right ventricle
B) right atrium
C) left atrium
D) left ventricle
E) superior vena cava
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Multiple Choice
A) use simple lungs
B) use air sacs connected to their lungs
C) use carbon dioxide for respiration
D) can diffuse oxygen through their skin
E) use simple lungs and can diffuse oxygen through their skin
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Multiple Choice
A) diffusion
B) active transport
C) passive transport
D) endocytosis
E) pressure flow
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Multiple Choice
A) aorta
B) right atrium
C) left atrium
D) trunk of the pulmonary arteries
E) superior vena cava
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Multiple Choice
A) AV node; cardiac pacemaker
B) SA node; septum
C) AV node; SA node
D) SA node; AV node
E) septum; cardiac pacemaker
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