What unique feature connects the anterior and posterior blood supplies of the brain, providing more than one route for blood to reach brain tissue in a given area?
a. Coronary circulation
b. Hepatic portal circulation
c. Circle of Willis
d. Ductus arteriosus
e. Bundle branches
Answer: c. Circle of Willis
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A) right atrium; left ventricle B) left atrium; left ventricle C) left ventricle; right atrium D) right ventricle; left atrium E) None of the answers are correct.
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Fill in the blank(s) with the appropriate word(s).