The smallest unit of any of these pure substances (elements) is a(n)
atom
Describes a position closer to the surface of the body.
Superficial
The plane that divides the body or organ horizontally into upper and lower portions is called the
Transverse Plane
The cavity that includes the cranial cavity and spinal cavity is called the
Posterior Cavity
The name of the layer of the membrane that covers the organs is the
Visceral layer