The central channels may be round or show variation in shape, including undulating contours and papillary infoldings
During early adulthood, the glandular epithelium is increased by the infolding
of the epithelium.
The DP lobes are composed of acini small in diameter compared to the other lobes, which are lined by columnar epithelium with moderate infolding
and occasional tufting, and are surrounded by a relatively dense stroma.
The extensive plasma membrane infoldings
associated with mitochondria provide increased surface area and energy for active ion transport.
They proposed that the palatal groove represents an infolding
of the enamel organ and Hertwig's epithelial root sheath and parallels the pathogenesis of dens invaginatus.
The epithelium of the genital chamber consists of a monolayer of cells which are characterized by basal membrane infoldings
associated with mitochondria, thus forming a typical basal labyrinth (Fig.
The term "ruminate," derived from the Latin rumino (chew; Periasamy, 1962a) or based on a similarity with the teeth of ruminants (Corner, 1966), refers to an uneven endosperm surface that is often highly enlarged by ingrowths or infoldings
of the surrounding tissue.
Normal implants have smooth, well-defined margins, with radial folds indicating the normal infoldings
of the implant envelope.
99-106) reported on the finding that a seven-week-old aborted embryo presented infoldings
of the hemispheric neuroepithelium, cranioschisis, exencephaly and excessive vascularity with endothelial proliferation --in short, severe malformation of the brain.
But in cones, the light-sensing molecules are located on deep infoldings
of the outer membrane--so a messenger chemical might not be required.
The central zone of the prostate is characterized by a complex architectural appearance with numerous papillary infoldings
and tall pseudostratified epithelium (Figure 2, A).
The highly vascularized moist surface of the lungs fits within the confines of the chest cavity with numerous infoldings
, the lung tissues actually fold on themselves.