The developing heart and lungs begin to receive autonomic innervation in the ________ week of development.
A. 10th
B. 5th
C. 4th
D. 6th
E. 16th
Answer: A
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In some cases the epiphyseal plate of the long bones of children closes too early. What might be the cause?
A) elevated levels of sex hormones B) too much vitamin D in the diet C) overproduction of thyroid hormone D) osteoblast activity exceeds osteoclast activity
An increase in PCO2 would cause
A) the bronchioles to constrict and the systemic arterioles to dilate. B) the bronchioles to dilate and the systemic arterioles to dilate. C) the bronchioles to dilate and the systemic arterioles to constrict. D) the bronchioles to constrict and the systemic arterioles to constrict. E) None of the answers are correct.
If the effects of sympathetic and parasympathetic stimulation are similar, then the effects would be cooperative.
Answer the following statement true (T) or false (F)
A potentially fatal condition which results from ischemic damage to the myocardium is known as atrial fibrillation.
a. true b. false