We call the major salivary glands the parotid, submandibular, and sublingual glands. They all secrete saliva into your mouth, the parotid through tubes that drain saliva, called salivary ducts, near your upper teeth, submandibular under your tongue, and the sublingual through many ducts in the floor of your mouth.esides these glands, there are many tiny glands called minor salivary glands located in your lips, inner cheek area (buccal mucosa), and extensively in other linings of your mouth and throat. Salivary glands produce the saliva used to moisten your mouth, initiate digestion, and help protect your teeth from decay.
NASA's Johnson Space Center in Houston has been the agency's human spaceflight hub for half a century, though not always under its current name.
The Johnson Space Center is home to Christopher C. Kraft Jr. Mission Control Center (MCC-H), the NASA control center that coordinates and monitors all human spaceflight for the United States.