And the better to see a predator. Prey animals have eyes on the side of the head. This helps when a predator is sneaking up behind them. The big eyâ¦es means they can see better. Prey animals can tell at a glance if you are predator or prey. Predators' eyes are on the front of their heads.
Lymph nodes are generally circular, bean-like organs that are dispersed throughout the body. The lumbar lymph nodes are located in the region of the body between the diaphragm (a muscle in the lower rib cage that helps with breathing) and pelvis, known as the lumbar region. They are also called the lateral aortic lymph nodes. The nodes are part of the lymphatic system of the human body.
The superior vena cava returns blood from the upper body to the heart, and the inferior vena cava returns the blood from the lower part of the body. The superior vena cava is thin-walled, and the blood is under low pressure. It lies near lymph nodes in the chest. Therefore, when the lymph nodes or the aorta of the heart get bigger, the superior vena cava is squeezed, blood flow slows, and complete blockage may occur.