The Primary Motor Cortex. Every voluntary movement you make is controlled through the primary motor cortex, or PMC, which is located in the back of the frontal lobe, just about at the top of your head.Signals in your brain are sent to the muscles, telling them to make a movement.he Primary Motor Cortex. Every voluntary movement you make is controlled through the primary motor cortex, or PMC, which is located in the back of the frontal lobe, just about at the top of your head.
What is a unit rate? A unit rate is a rate expressed in a quantity of one unit. A car traveling at a rate of 60 miles per hour, for example, is an expression of a unit rate. It describes the car's traveling rate over 1 hour of time.
In math, the unit rate is a comparison of two different quantities when they are combined together. Discover the definition of the unit rate in math with tips from a mathematics tutor in this free video on math lessons.Expert: Ken Au. Bio: Ken Au is a math teacher and tutor for middle school through college levels.iscover the definition of the unit rate in math with tips from a mathematics tutor in this free video on math lessons. Expert: Ken Au. Bio: Ken Au is a math teacher and tutor for middle school through college levels.