After the transformation of spermatids into sperm, their heads become embedded in a cell called “X” and are finally released from the “Y” by the process called “Z”. Identify X, Y and Z.

After the transformation of spermatids into sperm, their heads become embedded in a cell called sertoli cells (X) and are finally released from the seminiferous tubule (Y) by the process called spermiation (Z).