cleavage furrow
The cleavage furrow is a plasma membrane invagination at the cell division site. The cleavage furrow begins as a shallow groove and eventually deepens to divide the cytoplasm.
en-US/ˈklivəd͡ʒ ˈfɝɹoʊ/
en-GB/ˈkliːvɪd͡ʒ ˈfʌɹəʊ/
The cleavage furrow is a plasma membrane invagination at the cell division site. The cleavage furrow begins as a shallow groove and eventually deepens to divide the cytoplasm.