Final answer:
The phrase 'root opening' and 'root face' are terms from welding, not biology. They are not applicable to the Temporomandibular Joint (TMJ), which is a type of synovial joint in the human body that allows for the movement of the mouth.
Step-by-step explanation:
The statement that the root opening of a joint is the same as the root face of the joint is false. In welding terminology, the root opening refers to the separation between the parts to be joined, whereas the root face is the area of the joint surface that is not beveled. However, in the context of biology and specifically in reference to the Temporomandibular Joint (TMJ), these terms do not apply. The TMJ does not have a "root opening" or a "root face" as it is a synovial joint that allows for movements such as opening and closing of the mouth.