Answer :

A red blood cell located in the superior mesenteric vein is carried to the junction of the superior mesenteric vein and the splenic vein  to form the hepatic portal vein.

Hemoglobin, an iron-containing biomolecule that can bind oxygen and is the cause of the red colour of the cells and the blood, is abundant in the cytoplasm of a red blood cell. Hemoglobin is present in each red blood cell in the human body, numbering about 270 million molecules. The blood cell's deformability and stability while travelling through the circulatory system, more specifically the capillary network, are provided by the cell membrane, which is made up of proteins and lipids. These properties are crucial for physiological cell function.

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