OrganHistologyLeonardCrain
Alveoli - Little air sacks, around lung, similar to adipose
Trachea
Mucosa (general layer)
Pseudostratified ciliated columnar epithelium
Lamina Propria - (areolar connective tissue - attached to epithelium)
Submucosa - (general layer - Areolar connective tissue)
Hyaline Cartilage - main feature
Trachealis muscle - smooth muscle
Esophagus
Mucosa
Stratified squamous epithelium
Lamina Propria - (Areolar C.T) - has cross section of blood vessels
Submucosa - Areolar C.T (open & loose)
Muscularis Mucosa - Muscle, snake like (third layer of mucosa)
Muscularis Externa - Muscle/ very thick
Adventitia - Areolar C.T outside of the muscularis externa
Stomach
Mucosa
Simple Columnar Epithelium
Gastric pits - (structural/ opening)
Gastric glands - Lumen looking structures inside the lamina propria
Lamina Propria - wrapped around the nucleus of the nucleus of simple columnar - on the inner layer of a epithelium (also on top of muscularis mucosa)
Muscularis Mucosa - very straight
Submucosa - Areolar connective tissue
Muscularis Externa - as the name implies the outside muscle layer
Serosa - Serous membrane (in the peritonaeum - visceral)
Small Intestine (duodenum) - Only organ with vili
Villi
Mucosa
Submucosa - Areolar C.T
Simple Columnar Epithelium
Brush border - top part of simple columnar epithelium
Intestinal crypts - located in the lamina propria and openings in the epithelium
Lamina Propia - next layer below the simple squamous epithelium
Muscularis Mucosa - straight purple line below lamina propia
Duodenal Glands - (made of cuboidal epithelium) - inside submucosa
Muscularis Externa - made up of two layers
Inner Circular smooth muscle - 1st layer is actually more longitudinal
Outer longitudinal smooth muscle - look a lot more circular
Serosa - Membranous layer
Large Intestine
Mucosa
Simple Columnar Epithelium
Lamina propria - loose areolar connective tissue
Muscularis mucosa - very thin - deep to lamina propria
Submucosa - follows along the muscularis mucosa
Lymphatic nodules - (purple) - big purple clowd full of lymphocytes
Muscularis Externa (general layer) - two layers
Serosa - outer membrenous layer
Inner circular smooth muscle - 1st layer is more longitudinal
Outer longitudinal smooth muscle - more circular
Ureter
Mucosa
Transitional Epithelium - (very thick - Pyramid/horn appearance
Lamina Propria - follow folds
Muscularis - only one layer
Adventitia - outside peritaneum
Urinary Bladder - large organ - only piece of lumen seen
Mucosa
Transitional Epithelium
Lamina Propria
Muscularis - very disorganized (very thick)
Adventitia - outer membrane
Liver
Lobules - the entire liver structure - clearly lobule boundry
Hepatocytes - the liver cells organized in lobules
Stellate macrophages
Sinusoids - white cracks along the hepatocytes
Central Vein - lumen like structure at the center of the lobule
Portal triad - structure near the outside of the lobules (border)
Hepatic artery - circular with simple squamous epithelium
Hepatic portal vein - the lumen like section
Bile Duct - made of simple cuboidal epithelium
Pancreas - sea of gland cells and acini (looks like shattered glass)
Pancreatic Islets - densely pact nuclei (small island)
Pancreatic Acini - dark geometric purple stains
Pancreatic ducts - light circle/ white "cracks"
Kidney
Medulla - inner layer
Kidney tubules - simple cuboidal epithelium (mostly longitudinal shape with a few circular)
Lumen - lumen of the kidney tubules
Simple Cuboidal Epithelium - that surrounds the tublules
Cortex
Renal corpuscle - ball shape structures - area around it is the cortex of the kidney
Glomerular Capsule - outer layer of renal corpuscle made up of simple squamous epithelium
Simple squamous epithelium - makes up the Glomerular capsule
Capsular space - space between the simple squamous epithelium & Glomerulus
Glomerulus - bundle of capillaries - inside the renal corpuscle
Testis
Seminiferous tubules - circular shape structure (creates sperm)
Spermatozoa - string (possibly tadpole shape) inside the lumen
Intestinal cells - cells on the outside of the seminiferous tubules
Ovary
Primordial Follicles - Immature structure with eggs inside
Primary Follicle - Oocyte with flat cells on the outside / also may have cuboidal cells with multiple layers
Secondary Follicle - stratified cuboidal and small/ not fully developed Antrum
Mature Follicle - Fully developed antrum with corona radiata
Oocyte - egg cell (inside each follicle)
Zona pellucida - protective coating around Oocyte
Corona Radiata - Granulosa cell that surround the Oocyte
Antrum - liquid/ fluid filled space
Granulosa cells - collection of supporting cells