★ Urinary System Quiz
the functional unit of the kidney is the
A. ureter
B. kidney
C. nephron
D. renal artery
Select your answer:
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Immunology › ViewWhich pathway of complement activation bypasses the antibody requirement?
A. C3b pathway
B. Alternative pathway
C. Classic pathway
D. Lectin pathway
Endocrine System › View
If mammals get too cold, their blood vessels
A. constrict to release heat more easily
B. dialate to release heat more easily
C. constrict to prevent heat loss
D. dialate to prevent heat loss