on january 1st the ontario power authority opa is merging with the independent electricity system operator ieso to create a new stronger organization that will combine the opa and ieso mandates and continue the high quality work both organizations are known forn january 1st the ontario power authority opa is merging with the independent electricity system operator ieso to create a new stronger organization that will combine the opa and ieso mandates and continue the high quality work both organizations are known for
  The Patellar reflex is an example of a somatic reflex. This refers to the branch of the nervous system that the reflex pertains to. The somatic branch is part of the Per â¦ ipheral Nervous system meaning that it's reflex arc does not pass through the central nervous system (the spinal cord and the brain).
It's an expression/saying meaning: An immediate unthinking emotional reaction produced by an event or statement to which the reacting person is highly sensitive; It's origin is thus: From the tendency of the knee to jerk involuntarily when hit sharply, properly called the patellar reflex. That was recorded by Sir Michael Foster in his Text-book of physiology, 1877: Striking the tendon below the patella gives rise to a sudden extension of the leg, known as the knee-jerk..