Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
The cleavage furrow is a shallow groove in the cell membrane where cytoplasmic division will occur. It's the first sign of cytokinesis during cell division in an animal cell.
This is a thin layer that surrounds every living cell, delimiting the cell from the environment around it. It plays a vital role in protecting the integrity of the interior of the cell by allowing certain substances into the cell while keeping other substances out.