What percentage of people have a complete cerebral arterial circle (circle of Willis)?
A. 5%
B. 20%
C. 45%
D. 60%
E. 85%
B. 20%
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Which of the following plasma constituents is not regulated by the kidneys?
a. glucose b. Na+ c. H+ d. phosphate e. water
Benefits of regular exercise include all of the following, EXCEPT __________.
A) lowered blood pressure. B) increased plasma levels of HDL (high-density lipoproteins). C) decreased risk of heart attack. D) decreased plasma levels of triglycerides. E) increased levels of LDL (low-density lipoproteins).
The kidneys are the organs that are primarily responsible for maintaining constancy of the volume and electrolyte composition of the internal fluid environment
Indicate whether the statement is true or false
Tissue factor (Factor III) is a factor in the ________ pathway
A) extrinsic B) intrinsic C) common D) retraction E) fibrinolytic