retractor

(redirected from retractor muscle)
Also found in: Dictionary, Thesaurus, Medical.

retractor

[ri′trak·tər]
(anatomy)
A muscle that draws a limb or other body part toward the body.
(medicine)
A clawlike instrument for holding tissues away from the surgical field.
References in periodicals archive ?
We anticipated that the nuchal retractor muscle, given its position and orientation, would function to retract the head toward the mantle.
We used sonomicrometry to estimate in vivo changes in nuchal retractor muscle (NRM) length.
Proximal one is a short, slender duct which together with terminal end of vas deferens is totally invested by wide insertion of penis retractor muscle, thus obscuring its true structure.
Penis retractor muscle inserts broadly on distal section of first part of penis, with a few strands being continued on to second part (Fig.
The retractor muscles are extrinsic to the hook supports and can be seen best in the three-dimensional reconstructions generated by confocal microscopy (Fig.
3) in the area where the radial myofilament bundles, the divaricator muscle fibers, and the retractor muscles are connected at the base of the proboscis.
la, b) show a periodic transitory dimpling at the site of attachment of a larval retractor muscle (Fig.
Our observations of early larval development in trochoidean gastropods led us to hypothesize that the thin organic larval shell was insufficiently calcified at the onset of torsion and lacked the mechanical rigidity to antagonize contraction of the larval retractor muscles.
Two of these, which I call the larval retractor muscle (LRM) and the accessory larval retractor muscle (ACC), begin to acquire myofilaments before rotation of the cephalopodium relative to the protoconch and visceral lobe [ILLUSTRATION FOR FIGURE 1A OMITTED], a morphogenetic movement that has been called ontogenetic torsion.
Larval retractor muscle (LRM) and accessory larval retractor muscle (ACC)