Air sacs are thin-walled structures, one to two cell layers thick, that extend throughout the body cavity and into the wing and leg bones 2. Most birds have nine air sacs: two cervical ...

THIN-WALLED expansions of the tracheæ known as air sacs occur in those insects which have well-developed powers of flight. Misconception as to the function of these structures is common.

Aside from their strange horns, these birds also possess some interesting anatomy below the surface. Inside their bones and skin are tons of tiny air sacs that reduce the weight of these large ...

Air sacs, found in both extinct dinosaurs and modern birds, helped these creatures capture more oxygen and regulate body temperature. Their presence in sauropods played a critical role in enabling ...

Seoul, South Korea — The first report on last month's Jeju Air crash in South Korea confirmed traces of bird strikes in the plane's engines, though officials haven't determined the cause of the ...

Both engines of the aircraft involved in last month’s fatal Jeju Air crash in South Korea were found with bird remnants, though it remains unclear how much damage each sustained before the plane ...