Portal hypertension is a term used to describe elevated pressures in the portal venous system (a major vein that leads to the liver). Portal hypertension may be. caused by intrinsic liver disease, obstruction, or structural changes that result in increased portal venous flow or increased hepatic resistance.
Quick Answer. Tumblebooks are pre-existing picture books in e-reader format that have added animation effects, narrated story and dialogue, enhanced sounds and music appropriate to the story. This content engages children and encourages them as they learn to read. Adults and children can read the books or have them read by the program.
 Tumbling Tumbleweeds  is a song composed by Bob Nolan. Although one of the most famous songs associated with the Sons of the Pioneers, the song was composed by Nolan in the 1930s, while working as a caddy and living in Los Angeles.Tumbling Tumbleweeds  is a song composed by Bob Nolan. Although one of the most famous songs associated with the Sons of the Pioneers, the song was composed by Nolan in the 1930s, while working as a caddy and living in Los Angeles.