★ Transportation Quiz
Which blood vessel has valves to prevent the back-flow of blood?
A. Veins
B. Arteries
C. Capillaries
Select your answer:

Topics:
Corona Mycology Cardiopulmonary Life Processes Excretion Endocrine System Cell Medical, Legal, and Ethical Issues Respiratory and Urinary Cell Membrane and Transport Cytology and Histology Maximal Oxygen Consumption (VO2 Max) Pathology - Chronic Inflammation Cell and Tissue PBS Routine TestingOther quiz:
Urinary System › Viewcollecting tubules are here
A. Renal capsule
B. Renal cortex
C. Renal medulla
D. Renal pyramid
Philosophy › View
the study of knowledge, truth, and the nature of ultimate reality.
A. Philosophy
B. Theology
C. Anthropology
D. Hamartiology