MUSCLES OF RESPIRATION. When the diaphragm contracts in inspiration, initially the lower ribs are fixed and the dome of the diaphragm descends, thus increasing the vertical diameter of thorax.
arrearage. 1  the state or condition of being in arrears. 2  Often, arrearages. arrears; amount or amounts overdue. 3  Archaic. a thing or part kept in reserve.
errand. n. 1. a short trip undertaken to perform a necessary task or commission (esp in the phrase run errands). 2. the purpose or object of such a trip. [Old English Ç£rende; related to Är messenger, Old Norse erendi message, Old High German Ärunti, Swedish aerende ]. Ã¤rende