The foramen ovale ________
A) connected the two atria in the fetal heart
B) is a condition in which the heart valves do not completely close
C) is a connection between the pulmonary trunk and the aorta in the fetus
D) is a shallow depression in the interventricular septum
A
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The _________ secretes growth hormone, which is also known as somatotropin.
A. posterior pituitary B. anterior pituitary C. hypothalamus D. thyroid E. thymus
Which of the following structures contains the other four items listed?
A. Presynaptic terminal B. Neuromuscular junction C. Receptors on postsynaptic membrane D. Postsynaptic membrane E. Synaptic cleft
A patient's ECG recording shows a very long P-R interval. What is the cause of this abnormal wave pattern?
Most glands secrete their product by
A. phagocytosis. B. exocytosis. C. pinocytosis. D. endocytosis.