myoneural [mÄ«â²Å-nÅ«â²rÄl] Type:Term. Definitions 1. Relating to both muscle and nerve; denoting specifically the synapse of the motor neuron with striated muscle fibers: myoneural junction or motor endplate. Stedmanâs Medical Dictionary Â© Wolters Kluwer Health.
On 16-Aug-1960, Captain Joseph Kittinger of the US Air Force parachuted from a helium balloon at an altitude of 102,800 ft (19.5 miles / 31,354m) setting three world records; the highest parachute jump, the longest free fall (85,300 ft in 4 mins 36 seconds) and the first person to break the speed of sound without an aircraft (714 mph).
However, the air was so thin and the temperature was so low (12 Â°F) that they were unconscious when they reached that altitude. In May, 1961, the current official altitude record was set. Commander Malcolm Ross and Lieutenant Victor A. Prather, Jr. of the US Navy rose 113,740 feet (34,668 m). The name of the balloon was USN Strato-Lab V. This flight was part of a program called Strato-Lab which used experimental high-altitude manned plastic balloons. Prather drowned and died after his Strato-Lab V flight. His pressure suit filled with water as he landed at sea after his record breaking flight. Even though the highest altitude was 34,668 meters, according to the McGraw-Hill Encyclopedia of Science and Technology, a zero-pressure balloon is capable of rising to an altitude of 140,000 feet (42,000 m).