Histology Slides Winter

Esophagus (HE) Stratified squamous non-keratinized epithelium Lamina propria: loose connective tissue Muscularis mucosae; smooth muscle
Submucosa; fibroelastic connective tissue
Muscularis; smooth; inner - circular & outer-longitudinal Skeletal muscle
Adventia/Serosa

Skin (trichrom) Epidermis; Red- stratified squamous keratinized -Stratums

Dermis;
Papillary -next to dermis- loose connective tissue
Reticular layer - dense connective tissue Sweat glands , sebacceous glands
Hypodermis - loose connective tissue + adipose

Placenta (HE) Chorionic villi; cytotrophoblasts &synctiotropoblasts - Core =mesenchyme
Intervillous spaces - maternal blood
Endometrium (decidua)

Pineal Gland -epiphysis (HE) Pitiucytes &Astrocytes Capillaries Brain sand

Thymus (HE)
-aggregations of lymphatic nodules Cortex; darker, more densely, lymphocytes Medulla;paler, less lymphocytes, Hassal's corpuscles

Capsule; dense irregular connnective tissue

Lymph Node (Gömöri)
Reticular fibres - Black
Lymphatic nodules (follicles) - stroma rich in reticular fibres
Cortex; rich in nodules
Medulla: scattered lymphocytes
Connective tissue capsule

Stomach (HE)
Mucosa,Submucosa,Muscularis,Serosa
Mucosa; simple columnar epithelium with pits (invaginations
Lamina propria; gastric glands (open into pits)
-aggregations of lymph nodules
Muscularis mucoase: smooth muscle

Submucosa: connective tissue
-sometimes with mucous glands

Muscularis Externa:
3 layers smooth muscle
-Inner: oblique
Middle: circular
Outer:Longitudinal

Serosa

Duodenum (HE)
Mucosa:
-simple columnar epithelium
-Crypts of Lieberkühn (invag. of epith.)
-Intestinal villi (finger-like-projections of lamina propria into lumen)

Submucosa:
-Brünners glands (duodenal glands)

Muscularis Externa:
Inner: circular
Outer:Longitudinal

Serosa

Peripheral nerve- transverse (Osium Oxide)
Myelin - black
Endoneurium - yellow
Axon - pale area in center of each fibres

Deferent Duct (HE)
-thick walled muscular tube
Epithelium: pseudostratified columnar
Lamina propria + epithelium - folds

Musclaris: thick muscle layer
-inner- longitudinal-
-middle (thick) - circular
-outer-longitudinal

Adventia: loose connective tissue

Male Urehtra (HE)

Ureter (HE)
Stratified transitional epithelium
(+ umbrella cells - superficial big cells) Lamina Proria: connective tissue
-No submucosa

Muscularis: smooth muscle
Inner: longitudinal
Outer: circular

Adventia

Liver (HE)
Lobules, with central vein in middle
Hepatocytes (arranged in plates)
Sinusoids(paler) -endothelial cells & Kuppfer cells
White spaces = space of Disse

Portal space: where 3 lobules meet
Portal triad; Interlobular artery,vein,duct

Capsule

Submandibular gland (HE)
-Branched tubulo-acinar
Mixed Gland - serous & mucous
More Serous acini than mucous
Serous- more purple
Mucous -paler (serous demilune)

Ducts: simple cuboidal/columnar epithelium
Striated - longer (intralobular) -taller cells
Intercalated - shorter
(continous with serous acini)

Large Intestine (HE)
mucosa,submucosa,mucularis,serosa/adv.
Mucosa:
-simple columnar epithelium
-no folds, no filli
-Crypts of Lieberkühn- long, many goblet cells
(no paneth cells in crypts)
-Lamina propria (extends b/w crypts)
-lamina muscularis mucosae

Submucosa;
-loose connective tissue
-lymphoid nodules

Muscularis Externa:
-smooth muscle
-inner; circular , Outer; longitudinal

Serosa