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Organ Histology (Liver (Portal triad **at corner of lobules (Hepatic…
Organ Histology
Liver
Stellate macrophages
"star shape"
**will see bits of black-- only see the debris the macrophage ate
Sinusoids
**white cracks often near central vein
Hepatocytes
liver cells
**most of slide
Central vein
vessel
**big lumen
Lobules
**each big honeycomb
Portal triad
**at corner of lobules
Hepatic portal vein
bigger; larger lumen
Bile duct
vessel
easy to spot; **simple cuboidal donut
Hepatic artery
smaller; thicker wall for its size than HPV
Small intestine (duodenum)
Submucosa
Duodenal glands
simple cuboidal
Muscularis externa
2 pieces
Inner circular smooth muscle
ICOL
Outer longitudinal smooth muscle
ICOL
Mucosa
Simple columnar epithelium
Brush border
microvilli on very edge of villi
Intestinal crypts
rounded spaces
Lamina propria
Muscularis mucosa
--harder to distinguish
**run eyes horizontal to find
Serosa
serous membrane
Villi
Don't confuse w/gastric pits of stomach
Trachea
Submucosa
general layer
--glands/blood vessels
Hyaline cartilage
almost all the way around
Mucosa
general layer
Pseudostratified ciliated columnar epithelium
"specific tissue/layer"
Lamina propria
"specific tissue/layer"
-areolar CT
**deep to basement membrane
Trachealis muscle
--smooth muscle
-posterior aspect- connects
Esophagus
Submucosa
areolar CT; looks looser; may see x-section of blood vessels
Muscularis externa
quite thick; muscle looks diff. in each placce
Mucosa
Lamina propria
areolar CT
Muscularis mucosa
little layer of muscle
Stratified squamous epithelium
protection
**only one that has stratified squamous
Adventitia
thin border
Stomach
Muscularis externa
--looks loose here-- some CT
Serosa
serous membrane
Submucosa
areolar CT-- looser-- lots of white space; x-section of blood vessels
Mucosa
simple columnar epith. looks right next door to lamina propria-- like an accordian
Lamina propria
between epith. layers
--looks looser; will find some down near muscularis mucosa
Muscularis mucosa
Lamina propria right by here
Simple columnar epithelium
Gastric glands
"structure"
go up toward pits
Gastric pits
"structure"
**squared off tops-- in contrast to rounded villi
DON'T CONFUSE W/VILLI
Large intestine
EZ to ID-- epith. tissue almost ALL goblet cells for lubrication
Submucosa
Lymphatic nodules
purple; cloud; places w/lymphocytes- various shapes/sizes; BIG-- can't miss
Muscularis externa
Inner circular smooth muscle
ICOL
Outer longitudinal smooth muscle
ICOL
Mucosa
Simple columnar epithelium
Lamina propria
need great magnification
Muscularis mucosa
thin layer
Serosa
Ovary
Primary follice
-if primordial follices mature= turn into primary follice
**
Secondary follice
**can see granulosa cells beginning to make space
Primordial follicles
**wall of eyes at top border- each an egg; sometimes see nucleus
Mature follice
"vesicular follice"
**largest structure
Antrum
fluid-filled space
Granulosa cells
Corona radiata
**when granulosa cells surround the oocyte
Zona pellucida
protective coating around oocyte
**pink- surrounds egg
Oocyte
-egg cell
Pancreas
**shattered glass
Pancreatic islets
**few patches; looks like very densely-packed nuclei
Pancreatic acini
"groups of gland cells"
Make digestive enzymes. Exocrine
**most of the slide
Pancreatic ducts
surrounded by CT
often found in places by CT-- look for here
**zoomed in- can see obvious cuboidal circle
Ureter
**Could confuse w/esphogus
-Can see ALL the lumen (vs. urinary bladder)
Muscularis
1 layer
Looks very different from digestive system-- LOOSER
Adventitia
not serosa-- outside of peritoneum
Mucosa
Transitional epithelium
Stratified-- Very THICK. Can see that it's NOT FLAT. Apical layer=big eyes
Lamina propria
x-sections of blood vessels
Urinary bladder
-Can only see piece of lumen (vs. ureter- where you see all lumen)
Muscularis
in contrast to ICOL which looks organized, this looks crazy and disorganized. Muscle fibers all ways- THICK
Adventitia
outer edge
Mucosa
Transitional epithelium
--eyes looking
Lamina propria
Testis
Interstitial cells
Makes hormone
**cells between tubules
Spermatozoa
**in/near lumen, dark, looks like string
Seminiferous tubules
Maturation of sperm
**oval shape
Kidney
Medulla
Kidney tubules
-most of medulla is tubules; most are longitudinal
Lumen
Simple cuboidal epithelium
-can see if zoomed
Cortex
**in cortex if you see renal corpsucles
Renal corpuscle
a whole structure
Capsular space
space between
YARN CAN'T TOUCH BALLOON
Glomerular capsule
**outer- simple squamous- thin-like balloon
Simple squamous epithelium
composes glomerular capsule
Glomerulus
filling place of kidneys
**ball of yarn
Lung
Alveoli
Air sacs- exchange of gases
Don't mistake the folded look for villi--- Look for GOBLET CELLS!