Question

what is the shaft of a long bone called?
paraphysis
epiphysis
diaphysis
metaphysis
endophysis

Explanation:

In human anatomy, the shaft of a long - bone is known as the diaphysis. It is the main, elongated part of the long bone and provides structural support and acts as a site for muscle attachment. Paraphysis is not related to long - bone structure. Epiphysis is the end part of a long bone. Metaphysis is the region between the diaphysis and epiphysis. Endophysis is not a recognized term for long - bone structure.

Answer:

C. Diaphysis