parietal layer

pa·ri·e·tal lay·er

[TA]
the outer layer of an enveloping sac or bursa, usually lining the walls of the cavity or space occupied by the enveloped structure, the structure itself being covered with the inner or visceral layer of the enveloping sac; an actual or potential space is enclosed by the two continuous layers, intervening between parietal and visceral layers. The parietal layer is usually the more substantial layer.
Synonym(s): lamina parietalis [TA]
References in periodicals archive ?
Tunica vaginalis testis is an invaginated serous sac and like any other serous cavity in the body it has a visceral and parietal layer.
5 g of nitrocotton, observing that only the parietal layer of urethra was hurt while the urethral lumen was not effectively damaged.
The parietal layer lies against the scrotal wall; the visceral layer envelops all but the posterior portion of the testicle.
You will also learn that the bluish discoloration of the parietal layer of the tunica vaginalis is due to the Raman effect, another patriotic chestnut.
The outer layer of the pleural sac, the parietal layer, is served by the systemic circulation; the inner, visceral layer, by the bronchial circulation.
3) It is also interesting to note that this outer parietal layer has attachments to the diaphragm, sternum and costal cartilage, thus acting as a protective sac for the heart.
2,3) The flexor tendons of the hand are surrounded by double layered synovial compartments filled with synovial fluid, the deep layer is the visceral layer and contacts the tendon, the second, more superficial, layer is called the parietal layer.
By the late sporogenous mass stage, when callose first appeared around the sporogenous cells, the tapetum and parietal layer cells from male-sterile plants showed vacuoles (Fig.
TVF was harvested by incising near testicular inferior pole and tongue of parietal layer of TVF developed with due care to prevent ductus differns and spermatic vessels injury.
4) Later air enters to the pleural space after dissecting visceral and parietal layer reflection (Pneumothorax).
Four types of anther wall development were described by Davis [7] based on the secondary parietal layers.