★ The Cardiovascular System: Blood Vessels and Hemodynamics Quiz
The exchange of nutrients and waste products takes place through the walls of_______
A. arterioles
B. arteries
C. capillaries.
D. venules
Select your answer:

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The Circulatory System › ViewAre tubes that serve as passageways for blood to reach the different parts of the body.
A. valve
B. blood
C. blood vessels
D. ventricles
Compact Bone › View
What is a haversian canal?
A. channels lying at right angles to the central canal, connecting blood and nerve supply of the periosteum to that of the Haversian canal
B. one of a network of tubes running through compact bone that contains blood vessels and nerves
C. dense fibrous membrane covering the surface of bones
D. tiny canals that link osteocytes