Liver

Where is the liver located

right upper quadrant of the abdomen

what are the surfaces of the liver

diaphragmatic (smooth) and visceral (irregular)

How many lobes does the liver have (inferiorly) and what are they

4, left, right, caudate and quadrate

how many lobes does the liver have functionally

8

what important structure lies on the visceral side of the liver

the porta hepatis

what is the porta hepatis

transmits the portal triad, consisting of the hepatic artery portal vein and bile duct

superior relations

diaphragm

inferior relations

stomach duodenum right kidney colon and gall bladder

posterior relations

inferior vena cava which lies on a groove on its surface

is the liver reto or intra peritoneal

intra except the bare area

what ligament divides the liver into right and left

falciform ligament

What ligament is on the inferior border of the falciform ligament

round ligament

what ligaments attach the liver to the diaphragm and define the bare area

the coronary ligaments

what ligaments are formed at the lateral ends of the coronary ligaments

triangular ligaments

what ligament is found on the visceral surface and is the remnant of the fetal ductus venosus

ligamentum venosum

what is superior to the liver

diaphragm

what is inferior to the liver

many abdominal organs such as stomach, duodenum, right kidney, suprarenal gland, colon, and gallbladder

What runs in a groove posterior to the liver

inferior vena cava

what is the porta hepatis

hilum of the liver that transmits the structures of the portal triad

arterial supply of the liver

heptic artery proper

where does the hapatic artery proper come from

hepatic artery - celiac trunk

where does the hepatic artery proper divide into the left and right hepatic arteries

porta hepatis

what is the venous drainage of the liver

hepatic veins into vena cava

What is special about the livers blood supply

it had a dual blood supply. nutrient rich blood from the hepatic portal vein and oxygenated blood from the hepatic artery

what is the hepatic portal vein formed by

superior mesenteric vein and splenic veins

what does the hepatic portal vein do

delivers substances absorbed from the GI tract to the liver for processing

how much of the livers blood is derived from the portal veins

75-80%

what is the superficial lymphatics of the liver

associated with the bare area it drains into phrenic and posterior mediastinal lymph nodes

what is the deep lymphatics of the liver

drain to hepatic and celiac lymph nodes via the porta hepatis

What nervous system is the liver innervated by

autonomic nervous system

What nerve provides parasympathetic innervation in the liver

Vagus nerve

What nerve provides sympathetic innervation in the liver

celiac via hepatic plexus