Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Results 1 - 5 of 5 for Pump
  1. ... of wall that separates the heart chambers that pump blood out partly blocks the flow through one ...
  2. ... a result, the heart must work harder to pump blood through the narrowed arterial openings. In addition, ...
  3. As the heart pumps, arteries, shown here in red, carry oxygen-rich blood away from the heart toward the body's tissues and vital ...
  4. The heart is a powerful automatic pump. It's the part of the cardiovascular system we think of most when we think about good health. But healthy blood and blood ...
  5. ... into the left ventricle. This is the muscular pump that sends blood out to the rest of ...