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Riding the diaphragm

The liver does not move itself — it is pushed a couple of centimetres down with every breath, which is why it is felt on inspiration.

  • Right Lobe: Largest hepatic lobe
  • Left Lobe: Crosses the midline
  • Falciform Ligament: The fold marking the surface division of the lobes
  • Caudate Lobe: Tucked behind, with its own blood supply
  • Quadrate Lobe: On the underside, beside the gallbladder
  • Portal Vein: Nutrient-rich inflow
  • Hepatic Veins: Outflow, straight into the vena cava
  • Gallbladder: Stores and concentrates bile until fat arrives
  • Common Bile Duct: Carries bile down to the duodenum
  • Diaphragmatic Surface: The smooth dome moulded to the diaphragm, with the right lung and pleura just above it
  • Bare Area: The one patch with no peritoneum over it, fused directly to the diaphragm
  • Groove for the Vena Cava: The vein is bedded into the liver's back, and the hepatic veins join it here
  • Ligamentum Venosum: The closed ductus venosus, lying in its fissure beside the caudate lobe
  • Porta Hepatis: The gate on the underside — vein, artery and ducts all cross here
  • Proper Hepatic Artery: A quarter of the inflow, but nearly all the blood the bile ducts get
  • Round Ligament: The fetal umbilical vein, closed off in the free edge of the falciform
Digestive System

Liver

The quiet alchemist · Hepar
500+known functions

A remarkable metabolic organ that filters blood, processes nutrients, and produces bile.

Key facts

Size
About the size of a football
Weight
1.4–1.6 kg
Location
Upper right abdomen
Function
Metabolism, detoxification & bile

Did you knowIt is the only human organ that can regrow to full size from a fraction of itself.

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Microscopic view

Hepatic lobules

Compare organs

Liver vs. intestine

Function animation

Metabolism, detoxification & bile

Clinical notes

Red flags

  • Jaundice with drowsiness or confusion is liver failure with encephalopathy — the ammonia is reaching the brain.
  • Vomiting blood in known liver disease means ruptured varices — resuscitate first, endoscope fast.
  • A tense, fluid-swollen abdomen turning painful or feverish suggests infected ascites — it is tapped before antibiotics are chosen.
  • Fatty liver disease
  • Hepatitis
  • Cirrhosis
  • Gallstones
  • Haemochromatosis
  • Liver cancer
  • Autoimmune hepatitis
  • Portal hypertension
Where it works

Digestive System

A tube from mouth to end, plus the glands that feed into it, dismantling food into pieces small enough to absorb.

Also in this system
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