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.
Arrears: something overdue in payment; a debt that remains unpaid. Arrears: something overdue in payment; a debt that remains unpaid. Mortgage arrears are over due payments, interest and fees. It is the amount that you need to pay to catch your payment up so your mortgage is current.rrears: something overdue in payment; a debt that remains unpaid. Arrears: something overdue in payment; a debt that remains unpaid. Mortgage arrears are over due payments, interest and fees. It is the amount that you need to pay to catch your payment up so your mortgage is current.