Here are 10 things you may not know about Lean: 1  Codeine, one ingredient in âLeanâ is an opiate similar to: Heroin, Morphine, Oxycontin or Vicodin. 2  Weâve coined Lean as, âHip-Hopâs New Heroinâ. 3  Not a good look by the way, if youâve ever seen a heroin addict.
Most animals have three major pairs of salivary glands that differ in the type of secretion they produce: 1  parotid glands - produce a serous, watery secretion. 2  submaxillary (mandibular) glands - produce a mixed serous and mucous secretion. 3  sublingual glands - secrete a saliva that is predominantly mucous in character.
The parotid gland is a salivary gland, responsible for making saliva. There are two parotid glands, one on each side of the face. They are located in front of the ears and extend to the lower borders of the jawbones. The glands secrete thin saliva which travels into the mouth to aid in chewing and digesting food.he parotid gland is a salivary gland, responsible for making saliva. There are two parotid glands, one on each side of the face. They are located in front of the ears and extend to the lower borders of the jawbones. The glands secrete thin saliva which travels into the mouth to aid in chewing and digesting food.