Epithelium (Laboratory)

Kidney

What organ specimen is shown in this slide?

Glomerulus

In this slide, identify the structure labeled #1

Glomerulus

In this slide, this is the ball-like structure made up of capillaries (glomerular capillaries), mesangial matrix (mesangium), and glomerular mesangial cells.

Simple cuboidal epithelium

In this slide, identify the structure labeled as #2

Bowman’s capsule

In this slide, identify the structure labeled as #3

Bowman’s capsule

In this slide, this is a double-walled sac that envelops the glomerulus with parietal and visceral layer.

Bowman’s space

In this slide, identify the structure labeled as #4

Bowman’s space

In this slide, this is the narrow cavity between the visceral and parietal layers.

Heart

Endothelium

In this slide specimen, this is a simple squamous epithelium that lines the luminal surface of the heart and blood vessels.

Endocardium

In this slide, identify the structure labeled as #1

Endocardium

Simple squamous epithelium formed by a single layer of flattened cells on the free surface of the endocardium.

Purkinje Fibers

In this slide, identify the structure labeled as #2

Purkinje Fibers

Modified cardiac muscles

Stomach

What organ specimen is shown in this slide?

Fundus

Section of stomach lined by simple epithelium and contains simple tubular and simple branched tubular glands.

Simple Columnar Epithelium

In this slide, identify the structure labeled as #1

Simple Columnar Epithelium

Lines the luminal surface of the stomach and is composed of a single row of eosinophilic cells that are taller than they are wide. Generally oval, more basal than apical in location, and their long axes lie parallel to those of cells.

Simple Branched Tubular Gland

In this slide, identify the structure labeled as #1

Simple Tubular Glands

In this slide, identify the structure labeled as #2

Duct

In this slide, identify the structure labeled as #3

Main Gastric (Fundic Glands)

Ducts that open into the surface epithelium.

Trachea

What organ specimen is shown in this slide?

Trachea

Permanently open hollow tube that is lined on its luminal surface by epithelium

Pseudostratified Columnar Epithelium

In this slide, identify the structure labeled as #1

Basement Membrane

In this slide, identify the structure labeled as #2

Pseudostratified Columnar Epithelium

False stratified epithelium. Epithelium that consists of a single layer of columnar cells but may be mistaken as stratified epithelium because the nuclei of the cells are not on the same level.

Basement Membrane

Eosinophilic and is very prominent in light microscopy. This is where the basal surface of epithelial cells rest.

Goblet Cell

In this slide, identify the structure labeled as #1

Goblet Cell

One of the cells that comprise the epithelium. Columnar and cup-shaped cell with a tapered base that rests on the basement membrane and an expanded apical region called theca. Theca has numerous secretory granules that contain mucin in vivo.

Thick Skin

What organ specimen is shown in this slide?

Keratinized Stratified Squamous Epithelium

What epithelium can be seen in this slide?

Keratinized Stratified Epithelium

Topmost layer of the specimen. Made up of several layers of cells where the most superficial layer, which is being shed in some areas, consists of dead cells without nuclei. Otherwise known as epidermis.

Sweat Glands

What glands is visible in this slide?

Sweat Gland

Morphologically a simple coiled tubular gland. It is also a serous gland (by nature of secretion) and a merocrine gland (by mode of secretion).

Skin of Scalp

What organ specimen is shown in this slide?

Keratinized Stratified Squamous Epithelium

What is the topmost layer of this specimen?

Sebaceous Gland

What gland is visible in this specimen?

Sebaceous Gland

Mostly located superficially (closer to the surface epithelium) than the sweat glands. Morphologically simple branched alveolar gland. A holocrine gland as per the mode of secretion.

Jejunum

What organ specimen is shown in this slide?

Crypts of Lieberkuhm

Identify the structures pointed by the orange arrow.

Crypts of Lieberkuhn

Ducts whose openings can be traced onto the surface epithelium.

Duodenum

What organ specimen is shown in this slide?

Brunner’s Glands

Identify the structure pointed by the green arrow.

Brunner’s Glands

Compound coiled tubular mucous glands. Located deep of the crypts of Lieberkuhn

Simple Columnar Epithelium

Identify the structure labeled as #1

Goblet cells

Identify the structure labeled as #2

Ductus Epididymis

What organ specimen is shown in this slide?

Stereocilia

What surface modifications on epithelial cells can be seen in this specimen?

Urinary Bladder

What organ specimen is shown in this slide?

Umbrella Cells

Identify the structure pointed by the arrow.

Relaxed Urothelium

What kind of specimen is this?

Stretched Urothelium

What kind of specimen is this?

Choroid Plexus

What specimen is shown in this slide?

Ependyma (Simple Cuboidal Epithelium)

Identify the structure pointed by the arrow.

Submandibular Gland

What organ specimen is shown in this slide?

Alveoli (Serous)

Identify the structure labeled as #1

Ducts

Identify the structure labeled as #2

Myoepithelial Cells

Identify the structure labeled as #3

Serous Demilunes (of Giannuzzi)

Identify the structure labeled as #4

Alveoli (Mucous)

Identify the structure labeled as #5

Serous Demilunes (of Giannuzzi)

Serous cells are arranged to form crescentic caps called?

Pituitary Gland

What organ specimen is shown in this slide?

Sinusoidal Capillaries

The spaces are minute blood vessels called __________ that are lined by endothelium which refers to the simple squamous epithelium that lines the luminal surface of the heart and all blood vessels.