Air Sacs (also known as Air Sac, Sac, Air): Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes, insects, and mammals.

NIH MeSH · D000400Anatomy

Air Sacs

Also known asAir Sac · Sac, Air · Sacs, Air · Air Bladder · Air Bladders · Bladder, Air · Bladders, Air · Swimbladder · Swimbladders

Definition

Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes, insects, and mammals.

MeSH classification

  • A13.048

Need clinical context, treatments, or patient-language explanation?

Ask GoDavaii AI about Air Sacs

Related concepts

Abomasum

The fourth stomach of ruminating animals. It is also called the true stomach. It is an elongated pear-shaped sac lying on the floor of the a…

Anal Sacs

A pair of anal glands or sacs, located on either side of the ANUS, that produce and store a dark, foul-smelling fluid in carnivorous animals…

Animal Fins

Membranous appendage of fish and other aquatic organisms used for locomotion or balance.

Animal Fur

Usually densely-packed hairs on the skin of MAMMALS.

Animal Scales

Tough, horny, brittle, smooth, striated or plate-like extensions of the stratum corneum or outer layer of the skin. It serves as a protectiv…

Animal Shells

The hard rigid covering of animals including MOLLUSCS; TURTLES; INSECTS; and crustaceans.

Animal Structures

Organs and other anatomical structures of non-human vertebrate and invertebrate animals.

Antlers

The horn of an animal of the deer family, typically present only in the male. It differs from the HORNS of other animals in being a solid, g…

Common questions about Air Sacs

What does Air Sacs mean in medicine?
Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes, insects, and mammals. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Air Sacs known by any other names?
Yes. Air Sacs is also referred to as Air Sac, Sac, Air, Sacs, Air, Air Bladder in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Air Sacs sit in the medical classification?
Air Sacs falls under the broader medical category "Anatomy" in the MeSH hierarchy (tree numbers: A13.048). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Air Sacs?
For a plain-language explanation of Air Sacs - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Air Sacs" above.

Source: NIH MeSH 2026 (D000400) — National Library of Medicine, public domain. View official MeSH record ↗