Cochlea to structures in the brainstem for further processing. The "stapes" (stirrup) ossicle bone of the middle ear transmits vibrations to the "fenestra ovalis" (oval window) on the outside of the cochlea, which vibrates the perilymph in the "vestibular duct" (upper chamber of the cochlea). The ossicles are essential for efficient coupling of sound waves into the cochlea, since the cochlea environment is a fluid–membrane system, and it takes more pressure to move sound through fluid–membrane waves than it does through air; a pressure increase is achieved by the area ratio of the tympanic membrane to the oval window, resulting in
Jock Stirrup Security Review. In April 2013, Stirrup was appointed Knight Companion of the Order of the Garter by the Queen Elizabeth II. He was appointed as an honorary Marshal of the Royal Air Force in the Queen's 2014 Birthday Honours. In 2013 Stirrup, along with Field Marshal Lord Guthrie and Admiral of the Fleet Lord Boyce, called upon the British Government to derogate from the European Convention on Human Rights for the duration of deployed operations. They were concerned that the increased risk of prosecution faced by commanders would lead to a generation of risk-averse military leaders. In August 2014, Stirrup