Question

Schneiderian membrane is found in
(a)Loop of Henle
(b)Trachea
(c)Bowman’s capsule
(d)Nasal mucosa

Answer 1

They line the cavity. They’re a part of the respiratory mucosa, the mucosa lining the tract. They are intimately adherent to the periosteum or perichondrium of the nasal conchae.

Complete step by step answer:
The Schneiderian membrane is found within the nasal chamber which helps to smell (olfactory receptor). The membranous lining of the sinus cavity. It’s unique therein the ciliated columnar lining is ectodermal derived and features goblet cells. The neighboring respiratory epithelium, which appears almost like the Schneiderian membrane, comes from the endoderm. Microscopically there's a bilaminar membrane with pseudostratified ciliated columnar epithelial cells on the interior (or cavernous) side and periosteum on the osseous side.

Additional information:
One of the foremost common complications which will occur during a sinus grafting surgery is a tear or perforation within the Schneiderian membrane of the sinus. If this happens, typically, the surgeon will repair the perforation at an equivalent time the graft is placed, and few additional risks of complications exist. However, in some cases, patients will develop an infection within the sinus or surrounding areas of the maxillofacial complex after a considerable or complete tear within the membrane. This infection is serious and should end in the failure of a recently completed bone graft or implant.

So, the correct answer is ‘Nasal mucosa’.

Note: The Schneiderian membrane is also called the Schneiderian epithelium. Perforation of the Schneiderian membrane (maxillary sinus mucosa) is a common complication of sinus graft procedures. Membrane perforation increases the prospect of postoperative sinusitis and endangers graft also as implant survival.