Category Archives: Tissue

Pseudostratified columnar epithelia – trachea

“Pseudostratified” is a term applied to epithelia that appear to be stratified (i.e., have nuclei at various levels), but in which all component cells reach the base of the epithelium and are attached to the underlying basement membrane.  The basement membrane looks like a pink line at the base of the epithelium. (adapted from U Mich Histology)

Virtual microscopy (link). Pseudostratified epithelia from trachae. The cilia appear as hairlike projections at the cell apex.

Other similar posts

Simple Columnar Epithelium – Colon

In columnar epithelium, the cells are taller than they are wide.   Goblet cells which look like balloons suspended in the epithelium secrete mucus; the clear “balloon” in the apical region of each goblet cell is where the stored mucus is located (mucus does not react with H&E stain). In the colon, villi are absent and, instead, a simple columnar epithelium forms the intestinal “glands,” which are invaginations made up of mostly goblet cells.

Virtual Microscopy (link). Univ of Michigan.  This is colon histology

Other similar posts

Simple Columnar Epithelium

simple columnar epithelium is a columnar epithelium that is uni-layered. In humans, a simple columnar epithelium lines most organs of the digestive tract including the stomach, small intestine, and large intestine. Simple ciliated columnar epithelia line the uterus. Simple columnar epithelia are further divided into two categories: non-ciliated and ciliated. (from wikipedia)

Virtual Microscopy (link). Univ Michigan Histology

Other similar posts


35 Y/O male with congenital spinal anatomical abnormalities ( kyphosis and scoliosis due to formation and segmentation failure ) . This deformity exaggerated with trauma at childhood. (case reblogged from

Case discussion: The left scoliotic curve is angular and the kyphosis is extreme ( Gibbus deformity ). Bone detail is characteristically confused at the deformity. Multiple formation and segmentation failures with old collapse and compression fractures are noted at T11-L1 levels. Severe rotational deformity also is seen. Spinal canal is narrowed at the angle of the deformity.

Other similar posts