Anatomy & Physiology: Cardiovascular System

Circulation: venous portion

  • Deoxygenated (venous) blood flows from tiny capillary blood vessels within the tissues via progressively larger veins to the right side of the heart.
  • Blood is routinely drawn from veins, but may also be drawn from arteries, or capillaries.
  • Illustration this screen from LifeArt Collection 2000, with permission. © Lippincott Williams & Wilkins.

Review for ASCP Boards or test your clinical laboratory science knowledge with the FREE LabCE.com Quiz Game.

Phlebotomy course details »

Learn more about medical technologist continuing education for MTs, MLTs, and other lab personnel »

Get information on laboratory compliance training for clinical and medical laboratories »