salivary gland: any of three pairs of glands in the mouth and digestive system that secrete saliva for digestion
gland: any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream
becker muscular dystrophy: a form of muscular dystrophy that sets in in adolescence or adulthood and progresses slowly but will affect all voluntary muscles; characterized by generalized weakness and muscle wasting that affects limb and trunk muscles first; similar to Duchenne's muscular dystrophy but less severe; inheritance is X-linked recessive (carried by females but affecting only males)