In which of the following sequences does PO2 progressively decrease?
A. body tissue, arterial blood, alveolar air
B. body tissue, alveolar air, arterial blood
C. blood in aorta, atmospheric air, body tissues
D. atmospheric air, blood in aorta, body tissues
E. body tissue, aorta, alveolar air
D
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The vitelline system of fetal circulation
A. drains the gastrointestinal region. B. supplies the placenta. C. drains the limbs. D. forms the veins of the head and neck. E. forms the veins of the body wall.
In an EKG, the T wave denotes
A. closure of the AV valves. B. depolarization of the left ventricle. C. depolarization of the atria. D. repolarization of the ventricles. E. depolarization of the right ventricle.
How many stages of deglutition are there?
a) 2 b) 3 c) 4 d) 5 e) 8
Juan suffers a blow to the lateral compartment of his lower leg. Which of the following muscles could be damaged?
A. Extensor digitorum longus B. Tibialis posterior C. Fibularis longus D. Gastrocnemius