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Multiple Choice
A) is always active
B) is always passive
C) may be both active and passive
D) compresses alveoli
E) may be both active and passive and compresses alveoli
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Multiple Choice
A) the only smooth muscle in the human body
B) the only smooth muscle that can be voluntarily controlled
C) only found in humans
D) the only skeletal muscle that is under involuntary control
E) easily replaceable
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Multiple Choice
A) atrioventricular
B) aortic
C) pulmonary
D) pulmonary and aortic
E) atrioventricular and aortic
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Multiple Choice
A) integument exchange
B) lungs
C) tracheal exchange
D) gills
E) capillary tubes
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Multiple Choice
A) the ventricle to the lungs and then back to the heart and then to the body tissues
B) the atrium to the lungs and then directly to the body tissues
C) the ventricle to the body tissue and then to the lungs
D) the atrium to the body tissue and then to the heart
E) the atrium to the lungs and then back to the heart and then to the body tissues
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Multiple Choice
A) surrounding cells
B) lymphatic system
C) venules
D) capillary again
E) adjoining arterioles
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Short Answer
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Short Answer
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Multiple Choice
A) large diameter blood vessels
B) capillary beds
C) the zone of diffusion of gases and nutrients
D) the heart
E) capillary beds and the zone of diffusion of gases and nutrients
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Short Answer
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Multiple Choice
A) fully relaxed; systolic pressure
B) contracting; diastolic pressure
C) contracting; systolic pressure
D) fully relaxed; diastolic pressure
E) in transition; systolic pressure
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Short Answer
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Multiple Choice
A) restart their heart
B) ensure an oxygen supply to their brain
C) keep their lungs inflated
D) restart their heart and ensure an oxygen supply to their brain
E) restart their heart and keep their lungs inflated
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Multiple Choice
A) aorta
B) inferior vena cava
C) pulmonary artery
D) pulmonary vein
E) superior vena cava
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Multiple Choice
A) arteries
B) capillaries
C) arterioles
D) veins
E) venules
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Multiple Choice
A) esophagus
B) larynx
C) trachea
D) epiglottis
E) bronchi
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Multiple Choice
A) contraction of the atria
B) contraction of the ventricles
C) closing of the AV valves
D) opening of the AV valves
E) closing of the aortic valve
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Short Answer
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Multiple Choice
A) the circulatory system does not play a role in respiration
B) they can also exchange gases through their skin
C) the respiratory surface is in their gills
D) they do not possess lungs
E) they take in oxygen through lungs but release carbon dioxide from gills
Correct Answer
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