parenteric air sac [FBbt_00003111]
Elongated air sac of the adult thorax. It is a continuation of the abdominal dorsal trunk. It flanks the digestive tube in the thorax and becomes the cervical trachea in the neck region. It anastomoses anteriorly with the lateral system of the same side through a wide medial extension of the propleural sac, and posteriorly through a short connective near the posterior thoracic spiracle. The two parenteric sacs are connected by a short, straight dorsal commissure in the prothorax and a longer curved commissure under the mesophragma, both passing above the alimentary canal.
parenteric air sac
ID: FBbt_00003111
Adult Anatomy
Elongated air sac of the adult thorax. It is a continuation of the abdominal dorsal trunk. It flanks the digestive tube in the thorax and becomes the cervical trachea in the neck region. It anastomoses anteriorly with the lateral system of the same side through a wide medial extension of the propleural sac, and posteriorly through a short connective near the posterior thoracic spiracle. The two parenteric sacs are connected by a short, straight dorsal commissure in the prothorax and a longer curved commissure under the mesophragma, both passing above the alimentary canal.
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Classification
Relationships
- continuous with: adult cervical trachea, adult metathoracic dorsal tracheal branch, adult prothoracic dorsal tracheal branch, propleural air sac
- is part of: adult tracheal dorsal trunk
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