More a biology lesson. It’s the scientific word for the appendage. Human’s — I believe all mammals as well — have them lining our lower intestines. They help us absorb nutrients by increasing surface area.
The word itself, papillae, just means “a small, rounded part which protrudes from an organ/ nipple” from Latin.
Sspine doesn’t make sense here at all. I assume OP meant esophagus/ gullet.
It says spines, rather than spine. The esophagus is covered in spines (think like the spines on a porcupine, not a backbone).
Those “spines” are called papillae, for anyone wanting specifics.
Thanks to all for the English lesson! I’ve learned something.
More a biology lesson. It’s the scientific word for the appendage. Human’s — I believe all mammals as well — have them lining our lower intestines. They help us absorb nutrients by increasing surface area.
The word itself, papillae, just means “a small, rounded part which protrudes from an organ/ nipple” from Latin.
Seems like they meant spines to me? As in those little spikey spines pointing backwards down the esophagus?