No valves exist between the anterior vena cava and the heart, and the heartbeat tends to cause movement within this blood vessel. Another vessel, the posterior vena cava, carries blood from the lower half of the body to the heart.
The 2016 Hereford, Texas, population is 15,021. There are 2,447 people per square mile (population density).
Location in the U.S. state of Texas: Texas's location in the U.S. Founded: July 13, 1846: Named for: Cherokee people: Seat: Rusk: Largest city: Jacksonville: Area â¢ Total: 1,062 sq mi (2,751 km 2) â¢ Land: 1,053 sq mi (2,727 km 2) â¢ Water: 9.3 sq mi (24 km 2), 0.9%: Population â¢ 50,845 â¢ Density: 48/sq mi (19/km 2) Congressional district: 5th