More abdominal organs Flashcards
(7 cards)
Liver characteristics
- Size, color, functions
- Largest organ (besides skin)
- Soft & dark red
- Endocrine and exocrine functions:
Detox, glycogen storage, blood protein synthesis, bile secretion
Liver lobes (4)
- RT and LT lobes
- Quadrate and caudate lobes - visible from visceral (inferior aspect)
What enters and exits at the porta hepatis? - liver
Arterial blood (from proper hepatic a) & autonomic nerve supply enter @ porta hepatis
Biliary ducts and main lymphatic drainage - exit @ porta hepatis
Note: venous drainage empties into inf. vena cava
Hepatic portal vein
- Formed by what structures?
- From and to where does it transport blood
Formed by superior mesenteric and splenic v
Bring blood from capillary beds of stomach, intestines, and spleen to capillary bed of liver (SIS –> liver)
Portal blood
About 75% of blood that’s delivered to liver
Mixes with blood from the hepatic arteries
After passing through hepatic network, exits via THREE hepatic vv into inf vena cava
Low in O2 but rich in nutrients
Nutrients and liver
Nutrients absorbed in the LI are FIRST brought to liver
Liver adjusts concentrations - glucose can be stored as glycogen to be released later
Fat does NOT go to liver, they are picked up by lymphatics
Alcohol and RBC breakdown with liver
Alcohol gets detoxed by liver before it reaches heart, brain, etc.
Breakdown of old RBCs occurs in spleen and breakdown product of Hb gets sent to liver –> secretes as bile pigment
