Histology Flashcards
tissue lining the oesophagus
stratified squamous epithelium
the oesophagus wall is very folded
tissue lining the stomach
simple columnar epithelium
Identifying features of stomach histology
gastric pits
gastric glands in the submucosa
identifying features of transitional epithelium
multi-layered, tightly adhered, dome shaped cells
identifying feature of the ureter
star-shaped lumen
identifying renal medulla
less dense than renal cortex (stripy appearance)
lumen of collecting ducts and loops on henle
long thin lumens
identifying renal cortex
denser than renal medulla
circular glomeruli surrounded by Bowman’s capsule
convoluted tubule lumens
telling the difference between proximal and distal convoluted tubules
proximal = fuzzy due to brush border distal = clear border
Zones of the adrenal gland (from superficial to deep)
- colours and thicknesses of layers
Capsule - very thin zonal glomerulosa - thin, light pink zona fasciculata - thick, very pale zona reticularis - thick, dark pink Medulla - light pink
identifying thyroid
large areas of flat pink colloid surrounded by... small dark purple follicular cells with... medium sized clear C-cells (secrete calcitonin)
what type of cells are thyroid follicular cells?
columnar/cuboidal epithelial cells
Identifying parathyroid
clear capsule btw thyroid and parathyroid
large white adipocytes
pale pink oxyphils
dark purple chief cells
type of tissue lining the tongue
stratified, squamous, keratinised epithelium
identifying the tongue
dark very bumpy surface (due to papillae)
skeletal muscle under surface
Identifying spleen
very very dense
dark “white pulp” = lymphoid aggregation
pale “red pulp” = venous sinuses
tissue lining the small and large bowel
simple columnar epithelium
Identifying small bowel
villi (going in ALL directions) - disordered appearance
Duodenum: pale mucous glands in submucosa (=Brunner’s glands, secrete bicarbonate containing lubricating mucous)
(Paneth cells on villi = secrete immune substances)
identifying colon
appearance = more organised than small bowel, crypts go straight down
MANY goblet cells in crypts
general histological layers of the bowel
mucosa basement membrane submucosa muscularis externa serosa
Identifying the pancreas
darker staining exocrine portions
paler (endocrine) islets of Langerhans
Identifying liver
sheets of hepatocytes converge towards the central vein
sinusoids run between hepatocytes
identifying salivary glands
Ducts surrounded by dark serous/ pale mucous cells
= serous/mucous acini