Thorax - transverse sectionYou selected: right atriumVenous blood from the body enters the right atrium. Blood from the head, neck and arms collects in the superiour vena cava while blood from the lower regions of the body collects in the inferior vena cava.Blood subsequently enters the right ventricle where it will be pumped to the lungs for oxygenation. The tricuspid valve regulates the flow of blood between the two chambers. lungs | ribs | right atrium | left atrium | right ventricle | left ventricle | serratus anterior | latissimus dorsi | erector spinae | pectoralis major | Information Module Name: thorax Module Title: Thorax - transverse section Image Info: Gross specimen. Created by: Lynn Bry Contact Email:bryl@medicine.wustl.edu Last modified: Dec 12th, 1996 Created with Annotation 1.0 |