Section Summary. The endomembrane system includes the nuclear envelope, lysosomes, vesicles, the ER, and Golgi apparatus, as well as the plasma membrane. These cellular components work together to modify, package, tag, and transport proteins and lipids that form the membranes.
The parotid glands are located between the ear and the jaw. The submandibular glands are located under the jaw. The sublingual glands are located on the floor of the mouth under the tongue. The buccal glands are not shown in this picture. They are located in the mucous membrane lining the cheeks and mouth. These glands produce only a small amount of saliva.
1 The parotid gland makes 25% of the saliva and drains into the mouth near the upper teeth. 2  The submandibular gland makes 70% of the salvia and drains into the mouth from under the tongue.  The sublingual gland makes 5% of the saliva and drains into the floor of the mouth.