The speed of propagation is related to the size of the axon. The speed of action potential propagation is usually directly related to the size of the axon. Big axons result in fast transmission rates. For example, the squid has an axon nearly 1 mm in diameter that initiates a rapid escape reflex. Increasing the size of the axon retains more of the sodium ions that form the internal depolarisation wave inside the axon.
About the only thing known for sure is that the 119th Boston Marathon will be held on Monday, April 20, 2015. As for everything else, the initial discussions about next year are already underway. But itâs unlikely the race will return with a field of approximately 36,000 runners in 2015.
Oh, and 150 pounds of petroleum jelly, 992 portable toilets, 108,000 safety pins, 28,200 bananas, 33,984 fruit cups, 35,000 gallons of water and 1.4 million paper cups. Here's a by-the-numbers look at Monday's 119th running of the Boston Marathon: THE COURSE. The route covers 26 miles, 385 yards, starting on Main Street in Hopkinton and finishing on Boylston Street in downtown Boston.