the right subclavian artery branches off the brachiocephalic artery. the left subclavian artery is the third branch off the aortic arch. the internal carotid arteries arise from the common carotid arteries and supply blood to the brain and orbits.
The Airbus A350-900 is the tenth longest range airliner reaching a maximum distance of up to 14,350km (8,250nmi). It is one of the variants in the A350 XWB family. The aircraft can accommodate 315 passengers in a two-class seating configuration.
Heavy vs Large vs Small Aircraft. Additionally, the term large with respect to aircraft means one thing to air traffic controllers and another thing to pilots. A heavy aircraft, according to the FAA's Air Traffic Control Policy, Order JO 7110.65V, effective April 3, 2014, is one that is capable of taking off at a weight of 300,000 pounds or more. The key word is capable - an aircraft can operate with less than 300,000 pounds during takeoff and still be classified as heavy under this air traffic control policy. A large aircraft is one with a maximum certified takeoff weight of more than 41,000 pounds and less than 300,000 pounds. A small aircraft is one with a maximum certified takeoff weight of 41,000 pounds.