This is an optical microscope image of a human venule—a tiny blood vessel.
A venule is tiny blood vessel that connects capillaries—where the blood exchanges the oxygen it carries for carbon dioxide—to larger veins leading back to the heart.
• SIZE: A venule is about 30 µm in diameter.
• IMAGING TOOL: Optical microscope
The creator listed above has made this image available to NISE Network partners for non-profit educational use only. Uses may include but are not limited to reproduction and distribution of copies, creation of derivative works, and combination with other assets to create exhibitions, programs, publications, research, and websites.