trachealis

tra·che·a·lis (mus·cle)

[TA]
the band of mostly transversely disposed smooth muscular fibers in the fibrous membrane connecting the ends of the tracheal rings posteriorly; action, reduces caliber of trachea.
Synonym(s): musculus trachealis [TA]

trachealis

(trā″kē-ā′lĭs) [L.]
A muscle composed of smooth muscle fibers that extends between the ends of the tracheal rings. Its contraction reduces the size of the lumen.
References in periodicals archive ?
An extrinsic compression of the mid-trachea and trachealis muscle from posterior was seen with 90% lumen compression but without direct invasion of the trachea (Figure 1).
2013), The trachea consists of 48-60 cartilages, to the insides of which trachealis muscle is attached (Konig and Liebich, 2007).
Unlike mammals, the avian trachea is composed of closely spaced, complete tracheal rings with no musculus trachealis.
Additionally, the presence of complete tracheal rings would prevent any stretch in the trachea, unlike in mammals where the fibroelastic membrane and trachealis muscle can elongate in response to stress, making an exact fit more critical in birds.
The posterior tracheal wall lacks cartilaginous support, which is provided only by the thin band of the trachealis muscle.
Electrical and mechanical effects of BRL 34915 in guinea-pig isolated trachealis.
All the rings were then cut open opposite the trachealis muscle, and sutured together to form tracheal chain (Holroyde, 1986).
Two species of Locustacarus from grasshoppers (Orthoptera Acrididae) are Locustacarus trachealis Ewing, 1924 and Locustacarus masoni Husband, 1974.
4-9) The avian trachea differs from most species in that it is composed of closely spaced, complete tracheal rings and lacks the trachealis muscle.
Three species of Locustacarus are Locustacarus buchneri (Stammer 1951) from bumblebees (Hymenoptera: Bombinae), Locustacarus trachealis (Ewing 1924) from grasshoppers (Orthoptera: Acrididae), and Locustacarus masoni (Husband 1973) from grasshoppers (Orthoptera: Acrididae).
The avian trachea is composed of closely spaced, complete, cartilaginous tracheal rings with no musculi trachealis.