Final answer:
The portal triad of a liver lobule contains a hepatic artery branch, a hepatic portal vein branch, and a bile duct, supporting liver functionality with nutrients, oxygen, and bile excretion pathways.
Step-by-step explanation:
The portal triad of a liver lobule includes three main structures that provide the essential vascular connections for liver function. Within this triad, the first component is a branch of the hepatic portal vein, which delivers nutrient-rich blood from the gastrointestinal tract; the second is a branch of the hepatic artery, transporting oxygen-rich blood; and the third is a bile duct, which collects bile produced by hepatocytes and transports it towards the gallbladder and intestine.
These three components are crucial for supplying the liver with metabolic substrates, oxygen, and a pipeline for excreting processed compounds such as bile.The portal triad of a liver lobule contains a hepatic artery branch, a hepatic portal vein branch, and a bile duct, supporting liver functionality with nutrients, oxygen, and bile excretion pathways.