What occurs during the torsion of the testis?

The torsion of the testis involves an abnormal twisting of the spermatic cord that supplies blood to the testis. This twisting effect can lead to a situation where the testis rotates on its axis, which subsequently disrupts the blood supply to the affected testis. This interruption in blood flow can lead to ischemia, potential tissue death, and may cause severe pain and swelling. If not treated promptly, testicular torsion can result in significant complications, including loss of the testis.

In understanding the other options, while testicular inflammation can occur as a secondary effect, it is not the primary event during torsion. The testis does not typically shrink in size immediately due to torsion; rather, it is the consequences of interrupted blood supply that lead to further complications. Lastly, the idea of the testis exchanging positions with the ovary is anatomically incorrect, as the testis and ovary have distinct roles and locations in male and female anatomy, respectively.