Answer: alveoli

AnswerCrossword Clue
ALVEOLI

Honeycomb cells

ALVEOLI

Lung cells

ALVEOLI

Where oxygen and carbon dioxide are exchanged

ALVEOLI
Tooth sockets, anatomically speaking.
ALVEOLI
Cells in a honeycomb.
ALVEOLIAir cells
ALVEOLIAir cells in the lung
ALVEOLILung structures
ALVEOLITiny air sacs in the lungs