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 human liver produces approximately 400ml to 800ml of bile each day. Hepatocytes of the liver secrete bile, which is then released into the canaliculi before entering the bile ducts.The bile ducts add to this secretion a liquid rich with bicarbonates. Next, a hormone called cholecystokinin (CCK), causes gall bladder contraction, which discharges bile into the duodenum.he human liver produces approximately 400ml to 800ml of bile each day. Hepatocytes of the liver secrete bile, which is then released into the canaliculi before entering the bile ducts.