The anterior vena cava is a blood vessel responsible for conducting deoxygenated blood from the upper part of the body to the right atrium of the heart.
Harrison County covers an area. of approximately 485 square miles and had a year 2000 population of 34,325 (U.S. Census Bureau, 2005). The main population center is Corydon (2000 population 2,715), which is the county seat. The next largest towns are Palmyra (2000 population 633) and Lanesville (2000 population 614).
HARRISON COUNTY. The original inhabitants of this area were the Caddo Indians. Anglo settlers, mostly from the southern U. S., began arriving in the 1830s. Many obtained Mexican land grants in 1835, and population increased following Texas independence in 1836. The Republic of Texas Congress created Harrison County in 1839 and named it for Texas revolutionary leader Jonas Harrison (1777-1836). Marshall became the county seat in 1842. Harrison County was predominantly rural and agricultural, with cotton as the main crop. By 1850, it was the most populous, as well as one of the richest counties in antebellum Texas.