The oldest, and most commonly used, is the USDA Zone Hardiness map which calculates 11 zones and tells what level of winter cold a plant could experience in a location. Seattle falls into zone 8b with expected winter minimums of 15 to 20.
Motor cortex. (Redirected from Secondary motor cortex) The motor cortex is the region of the cerebral cortex involved in the planning, control, and execution of voluntary movements. Classically the motor cortex is an area of the frontal lobe located in the posterior precentral gyrus immediately anterior to the central sulcus.
The primary motor cortex controls voluntary movements and is considered to be part of the frontal lobe. The frontal lobe is part of four major divisions of the brain that make up the cerebral cortex, or outer layer of the brain. The parietal, temporal and occipital lobes make up the remaining three parts of the cerebral cortex.