The third branch off the arch of the aorta is the
A. right subclavian artery.
B. brachiocephalic artery.
C. right common carotid artery.
D. left common carotid artery.
E. left subclavian artery.
Answer: E
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Which hormone stimulates the deposition of calcium in bones?
a) parathyroid hormone b) T3 c) calcitonin d) oxytocin
An eccentric contraction is described as
A. action potential frequency is high enough that no relaxation of muscle fibers occurs. B. a muscle produces constant tension during contraction. C. a muscle produces an increasing tension during contraction. D. a muscle produces increasing tension as it shortens. E. a muscle produces tension, but the length of the muscle is increasing.
Identify the gas or gasses that normally has/have a higher partial pressure in alveolar air than in the atmosphere:
A. carbon dioxide B. carbon monoxide C. oxygen D. nitrogen E. nitrogen and oxygen
Foreign particles that are not filtered out by the respiratory epithelium are
A. carried away in blood. B. dissolved by enzymes in the alveoli. C. coughed up during normal daily activities. D. collected by lymph nodes. E. stored in nearby pulmonary alcoves.