Z line


A dark thin protein band to which actin filaments are attached in a striated muscle fiber, marking the boundaries between adjacent sarcomeres.Z band

Nearby words

  1. zooplankton,
  2. zooplasty,
  3. zoopraxiscope,
  4. zoosemiotics,
  5. zoosperm,
  6. zoospore,
  7. zoosterol,
  8. zoot suit,
  9. zoot suiter,
  10. zootechnics

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.