adjective
frontal
FRUN-tuhl/ˈfrʌntl/
Relating to or directed toward the front.
The portrait provides a frontal view of the head.

Etymology
Latin frons meant both “forehead” and “front.” With the adjective ending, frontal originally referred to the forehead; the broader meaning applies the same front-of-the-body image to the front of anything.
In context
Neurons in the primary motor cortex cause movement in the head and body. The portion of the frontal lobe that’s in front of the motor cortex is called the prefrontal cortex.