Lamina Propria Collection

Anatomy of the structure and layers of the stomach wall

Stratified squamous epithelium C016 / 0534
Stratified squamous epithelium. Light micrograph of a section through stratified squamous epithelium, showing the multiple layers, or strata, that function to resist abrasion of the surface

Coloured SEM of a sectioned villus from the ileum

Oesophagus wall, light micrograph
Oesophagus wall. Coloured light micrograph of a section through the human oesophagus, which passes food from the mouth to the stomach

Nose mucosa, light micrograph
Nose mucosa. Light micrograph of a section through the nasal mucosa (the tissue that lines the airways of the nose), in the region lying over the nasal concha

Trachea mucous membrane, SEM
Trachea mucous membrane. Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue

Intestinal villi, light micrograph
Intestinal villi. Light micrograph of a transverse section through villi of the intestine. Columnar epithelial cells (orange) surround lamina propria connective tissue (yellow)

Seminal vesicle, light micrograph
Seminal vesicle. Light micrograph of a section through the seminal vesicle showing the complex mucosal folding.Pseudostratified cuboidal epithelium overlies the loose connective tissue of the lamina

Bile duct, SEM
Bile duct. Coloured scanning electron micrograph (SEM) of a fractured bile duct. Columnar epithelial cells are red and brown, lamina propria is green and microvilli are purple

Nasal mucosa, artwork
Nasal mucosa, cross-section. Artwork of a sequence (left to right) showing mucus production in response to infection and inflammation

Intestinal blood vessels, SEM
Intestinal blood vessels. Coloured scanning electron micrograph (SEM) of a freeze fracture section through the lining of the colon

Small intestine lining, light micrograph
Small intestine lining. Light micrograph of a section through the finger-like projections (villi) of the duodenum, the uppermost part of the small intestine

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The lamina propria is a crucial component of the anatomy and structure of various organs in our body. Let's explore its significance in different parts, starting with the stomach wall. In the stomach wall, the lamina propria forms one of the layers alongside other structures. It lies beneath the epithelium and above the muscularis mucosae. This layer consists of loose connective tissue that supports and nourishes the overlying cells. Moving on to another area, let's focus on vaginal mucosa. When observed under a light microscope, we can see how this delicate tissue is composed of multiple layers including stratified squamous epithelium. The lamina propria here provides support to these layers while allowing for flexibility during various physiological processes. Similarly, when examining sections of the oesophagus wall under a light microscope, we can observe how important the lamina propria is in maintaining structural integrity. It acts as a foundation for other layers present within this organ. Now shifting our attention to small intestine villi from an ileum section seen through colored SEM imaging, we notice that even at such microscopic levels, there exists a well-defined lamina propria surrounding each villus. This layer plays a vital role in absorbing nutrients from digested food passing through these tiny projections. Lastly, let's not forget about its presence within urethral tissues when viewed under a light microscope. Here again, it serves as an essential supportive layer ensuring proper functioning and maintenance of this vital passage.