(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.
Netherlands is known as the top country with the tallest males at an average of 5 foot 11. The smallest countries are located in Asia with Cambodia listed as the shortest country with average male height of 5 foot 3.1.etherlands is known as the top country with the tallest males at an average of 5 foot 11. The smallest countries are located in Asia with Cambodia listed as the shortest country with average male height of 5 foot 3.1.