Tissue engineering, like genetic engineering (see below), is a major segment of biotechnology-which overlaps significantly with BME. One of the goals of tissue engineering is to create artificial organs (via biological material) for patients that need organ transplants.
The parotid gland is a major salivary gland in many animals. In humans, the two parotid glands are present on either side of the mouth and in front of both ears. They are the largest of the salivary glands. Each parotid is wrapped around the mandibular ramus, and secretes saliva through the parotid duct into the mouth, to facilitate mastication and swallowing and to begin the digestion of starches.
Submandibular gland. The paired submandibular glands (historically known as submaxillary glands) are major salivary glands located beneath the floor of the mouth. They each weigh about 15 grams and contribute some 60â67% of unstimulated saliva secretion; on stimulation their contribution decreases in proportion as the parotid secretion rises to 50%.