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.
A chapbook is a small collection of poetry, generally no more than 40 pages, that often centers on a specific theme, such as exotic foods or wild animals or Justin Bieber. Itâs typically saddle-stitched (like a pamphlet or magazine) and is a format well suited to smaller print-runs.