The aorta receives the full force of blood exiting the heart during ventricular systole. Which of the following statements best describes the adaptive anatomy of the aorta?
A) Smooth muscle is relatively thin in the aorta to increase lumen size and systemic blood flow.
B) Elastic fibers are extensive in the tunica media of the aorta and dampen the pulse pressure generated by the heart.
C) The aorta's tunica media is thick with dense regular connective tissue to withstand the blood's pressure.
D) The tunica external of the aorta is nearly absent compared to other vessels.
B
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Fill in the blank(s) with the appropriate word(s).