Digestive tract - Semmelweis

Digestive

tract

Liver

Pancreas

Dr. Szuák

András

GYTK

2019.03.11.

The great glands

• Liver • Pancreas

Right lobe

Gall bladder

Falciform lig

Left coronary

lig.

Left lobe

Right

coronary lig.

Right lobe

Left lobe

Round lig. Gall bladder

Ligamentum

venosum

Inferior vena

cava

Bare area

Liver hilum

Portal vein

Proper hepatic

artery

Hepatic duct

Hepatorenal

lig.

Caudate lobe

Segments of the liver

Lobes of the liver • The actual boarder is the so called

Rex-Cantlie line

– Line between

• inferior vena cava

• gall bladder

Diaphragm

Stomach

Spleen

Left colic flexure

Ascending colon

Right colic flexure Transverse colon

Descending colon

Greater omentum

Transverse mesocolon

Hepatoduodenal lig.

Lesser omentum

Topography of the liver

Liver

Gall bladder

Round lig.

Falciform lig.

Left coronary lig.

Omental

bursa

Hepato-duodenal

lig.

Hepato-gastric

lig.

Lesser

omentum

Greater omentum

Bile passages

Bile duct

Hepatic duct

Pancreatic

duct

Cystic duct

Duodenum

Blood supply of the liver

Portal vein

Histology of the liver • Hepatic lobules – hexagonal shape (portal lobule, acinus)

– Portal triad – portal vein, artery, bile duct

– Hepatic sinusoids between the hepatic chords

– Central vein

Hepatic lobule

Central vein

Interlobular vein

Interlobular artery

Interlobular duct

Portal

triad

Hep. chord

Hep. sinus

Hepatic sinus

Bile

canaliculi

Central vein

Portal

triad

Interlobular vein

Interlobular artery

Interlobular duct

Portal triad

Hep. chord

Endothel cell

Kupffer-cell

Bile canaliculus

Gall bladder

• Simple columnar epith.

• Lamina propria – glands, lymphocytes

• NO Muscularis mucosae layer

• NO Submucosa layer

• Muscularis externa

– cirlular, longitudinal and oblique layers

• Serosa OR Adventitia

Gall bladder

The great glands

• Liver

• Pancreas

Pancreas

Left hepatic duct Right hepatic duct

Common hepatic duct

Cystic duct

Gall bladder

Bile duct

Major duodenal papilla

Minor duodenal papilla

Accessory pancreatic duct

Pancreatic duct

Ducts opening into the duodenum

Blood supply of the pancreas

Histology of the pancreas

• Serous gland

• Centroaciner cell

• Langerhans islets – endocrine part

Kidney

Urinary

tract

Position of the kidneys

Kidney

Adrenal gland

Renal artery

Renal vein

Ureter

Fibrous capsule

Adipose capsule

cortex

medulla

Kidney

• Medulla – pyramids – Renal lobes

• Cortex – Bertini columns

– Convoluted part

– Straight part

• Renal artery – interlobar aa. –arcuate aa.

– interlobular aa.

Nephron

Nephron

Macula densa

Malphigian corpuscule

Podocytes

interdigitating

Ureter

• Urothelium

• Dense fibro-elastic connective tissue in the

lamina propria

• NO muscularis mucosae&submucosa

• Muscularis externa

– Inner longitudinal, outer circular layer

– Serosa or Adventitia

Urinary bladder

• Urothelium

• Dense fibro-elastic connective tissue in the lamina propria

• Muscularis mucosae – Not forming a continous layer, only some islets of

smooth muscle

• Submucosa – loose connective tissue

• Muscularis externa – Inner&outer longitudinal layers, middle circular layer

• Serosa or Adventitia

Urothelium, umbrella cells

Male Bladder&Urethra

Female Bladder&Urethra

Thank you for

your attention!