How does anointing of the sick relate to the Last Rites in Roman Catholicism?

In Roman Catholicism, the anointing of the sick is a distinct sacrament intended to provide strength and comfort to those suffering from serious illness or the frailty of old age. While it was historically referred to as "extreme unction" and often postponed until a person was in extremis (near death), modern practice emphasizes its role in supporting the ill throughout their recovery or struggle.12

The relationship between this sacrament and the last rites is that the anointing of the sick is often one component of the rites administered to the dying. When a person is at the point of death, a priest may administer the sacrament of the Eucharist—often referred to as viaticum—along with the opportunity for confession and a special apostolic blessing. Together, these prayers and sacraments constitute the last rites, serving to fortify the believer as they face the end of life.134