Final answer:
Undescended testicles, a condition where the testes do not descend into the scrotum, is clinically called cryptorchidism.
Step-by-step explanation:
Undescended Testicles
Undescended testicles, a condition where one or both of the testes fail to move down from the abdomen into the scrotum before birth, is also known as cryptorchidism. The scrotum, which houses the testicles or testes, is a pouch-like external structure of the male reproductive system, providing a passage for blood vessels, nerves, and muscles related to testicular function. Each testis is divided into lobules, where sperm develop in structures called seminiferous tubules. During the seventh month of fetal development, ordinarily, each testis descends into the scrotal cavity in a process referred to as the "descent of the testis."