Uberon Development note : Bruch's membrane is present by midterm in fetal development as an elastic sheet.;
Uberon Structure note : Bruch's membrane consists of five layers (from inside to outside): 1. the basement
membrane of the retinal pigment epithelium; 2. the inner collagenous zone; 3. a central
band of elastic fibers; 4. the outer collagenous zone; 5. the basement membrane of
the choriocapillaris. The retinal pigment epithelium transports metabolic waste from
the photoreceptors across Bruch's membrane to the choroid[WP];