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.
About the Sciatic Nerve in the Low Back. The sciatic nerve starts in your low back, which is called your lumbar spine. The nerve roots are at the L4 and L5 vertebrae (the 'L' means lumbar, and the numbers indicate the level of the vertebraâwhere it is in your back). The sciatic nerve also travels through your pelvic region (sacrum). In most people, the sciatic nerve runs under the piriformis muscle, which moves your thigh side to side. From there, the sciatic nerve descends through the buttocks and the back of the thighs. Behind your knee, smaller nerves branch out from the sciatic nerve and travel down to your feet. Your sciatic nerve is part of a complex structure: your body's nervous system. That system is responsible for transmitting pain and sensation to other parts of your body.