1 Motor neurons (motoneurons) carry signals from the central nervous system to the outer parts (muscles, skin, glands) of your body. 2  Receptors sense the environment (chemicals, light, sound, touch) and encode this information into electrochemical messages that are transmitted by sensory neurons.
The all-time single-season record for the lowest ERA, according to www.mlb.com, the official website of Major League Baseball, is held by Dutch Leonard, who in 1914 had an earned run average of 0.96, pitching 224.2 innings with a win-loss record of 19-5.
Lester, 30, leaves the Red Sox at the top of his game, having gone 10-7 with a 2.52 earned run average in 21 starts. His 149 strikeouts are sixth in the American League and he is fifth in ERA. Lester joins an Oakland team that is in first place in the AL West.