A flagellated cell with a collar of protoplasm at the base of the flagellum, numbers of which line the internal chambers of sponges.
- ‘Particles are caught in the collar part of the choanocyte cells.’
- ‘Water movement is driven by the beating of flagellae, which are located on specialized cells called choanocytes (collar cells).’
- ‘The anterior cells lost their cilia and migrated in to form the inner cell mass; some of these cells rapidly differentiated into choanocytes, while others remained amoeboid.’
- ‘Sponge cells called choanocytes each project a minuscule filament.’
- ‘Due to the physical structure of the choanocyte chambers and oscular chimneys, water can passively flow through the sponge without the choanocytes actively pumping.’
Late 19th century: from Greek khoanē ‘funnel’ + -cyte.
We take a look at several popular, though confusing, punctuation marks.