Concept:
Orchidectomy refers to the surgical removal of one or both testes, commonly performed for medical conditions such as testicular cancer or as part of castration.
Step 1: Evaluate Statement I.
Castration or removal of testes is indeed called orchidectomy. Hence, Statement I is correct.
Step 2: Evaluate Statement II.
Orchidectomy primarily affects hormone production (testosterone) and fertility. It does not directly affect urination, as the urinary system is separate from the testes.
Step 3: Conclusion.
Statement I is correct, but Statement II is incorrect.