(2) A motor neuron in the ventral horn of the spinal cord is activated, and an action potential passes outward in a ventral root of the spinal cord. (3) The axon branches to supply a number of muscle fibers called a motor unit, and the action potential is conveyed to a motor end plate on each muscle fiber.
The average male height varies from country to country. The estimated average height for the human male across the world is approximately 5ft 8 1/2in (1.73 m.) According to John Komlos of the University of Munich, North Americans were the tallest people on the planet from about the American Revolution to World War II.
Well now we know what the average height of an adult human is and you won't have to question how abnormal you are anymore. A study was done in the 1970s for the sole purpose for determining the average height of an adult human.he model predicts that adults born in 1820 achieved a mean adult height of 1.648 m; those born in 1952 reached 1.744 m; and those born in the year 200 are to reach on average an adult height of 1.783 m.