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.
The Boston Marathon is run each year on the third Monday of April â Patriotsâ Day in the Commonwealth of Massachusetts. From a field of 15 entrants and 10 finishers in the inaugural run, the race has grown to an international sporting event with more than 36,000 official entrants in this yearâs race.oston MarathonÂ®, B.A.A. Marathonâ¢, and the B.A.A. Unicorn Logo are registered trademarks of the Boston Athletic Association. Use of these trademarks without written permission from the Boston Athletic Association is prohibited.