The azygos vein is the major branch of the
A) axillary vein.
B) superior vena cava.
C) inferior vena cava.
D) common iliac vein.
E) jugular vein.
B
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The phrenic and intercostal nerves are made up primarily of autonomic nerves for smooth muscle control.
Answer the following statement true (T) or false (F)
In general, respiratory zone structures are lined with a thicker mucosa than conducting zone structures
Indicate whether this statement is true or false.
Only ________ muscle cells are always multinucleated.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements about blood clotting is NOT true?
A. It is the formation of a thrombus. B. It occurs after formation of a platelet plug in a damaged vessel. C. It requires the presence of erythrocytes. D. It is a result of a cascade of enzyme activation. E. It involves positive feedback by thrombin.