The knee permits the following movements: flexion, extension, as well as slight medial and lateral rotation. Also, the knee has special locking and unlocking mechanisms, related to movement by the femoral condyles on the tibial plateau.
H&E stain. Bile or gall is a dark green to yellowish brown fluid, produced by the liver of most vertebrates, that aids the digestion of lipids in the small intestine. In humans, bile is produced continuously by the liver (liver bile), and stored and concentrated in the gallbladder (gallbladder bile).
The Cause of Bile Reflux. Your liver produces bile acid to aid in the digestion and breakdown of fat from the food you eat. Bile acid in your stomach occurs due to a malfunction of your esophagus, a tube that connects your throat to your stomach. At the bottom is a muscle, the sphincter.