Cocaine can be detected in the system anywhere from 12 hours to 4 days after use. The length of time cocaine stays in your system depends on the dosage amount ingested, the route of administration and frequency of use. When cocaine is metabolized, the liver turns it into benzoylecgonine, which is then excreted in urine.
Other muscles involved in chewing are the obicularis oris and the zygomaticus. Both are lip muscles. The buccinator holds food in contact with the teeth. All three are innervated by the facial nerve (CN.
This muscle inserts â all the muscles of mastication inserts onto the mandible because the mandible is the bone that moves to cause mastication. Itâs the bone which is involved in chewing. The temporalis inserts onto the coronoid process of the mandible.