Which organ lies in the lateral and posterior portion of the left upper quadrant of the abdomen?

The organ that lie in the lateral and posterior portion of the left quadrant of the abdomen is called the spleen. This is normally lateral to the stomach, just off the greater curvature. inferior to the stomach is the the greater omentum. The transverse colon lies directly deep into it.

Hyper extension is the extension of a limb/body part beyond its limits