What percentage of people have a complete cerebral arterial circle (circle of Willis)?
A. 20%
B. 5%
C. 45%
D. 60%
E. 85%
Answer: A
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The point where the body of the mandible meets the ramus is the mentum.
Answer the following statement true (T) or false (F)
A tissue's function is to direct flow of a substance to an organ without losing any of the substance or letting any other substances contact it. Tight junctions are most likely to be found between the cells of this tissue.
Answer the following statement true (T) or false (F)
Nucleic acids are
A. composed of building blocks called nucleotides. B. primary sources of cellular energy. C. structural molecules that have no function other than support. D. very small, simple molecules.
All of the following are heritable blood disorders except
A) thalassemia. B) sickle cell anemia. C) hemophilia. D) sickle cell disease. E) malaria.