The adjective “venous” comes from Latin *venosus* ‘pertaining to a vein’, itself derived from *vena* ‘vein’. It entered English in the late 14th century via Old French *venos* and was first recorded in medieval medical texts describing the circulatory system. The word has retained its anatomical sense ever since.
Resuscitation comes from Latin *resuscitare* “to awaken again,” formed from the prefix *re-* “again” and *suscitare* “to raise, stir up.” The noun *resuscitatio* appeared in Late Latin, and English borrowed it in the late 16th century to describe the act of reviving a seemingly dead person.
Posture comes from Latin *postura*, the noun derived from *positus*—the past participle of *ponere*, meaning “to place.” The term entered English via Old French in the 12th‑13th centuries, originally referring to a position or way of placing the body. Over time it narrowed to the modern sense of bodily alignment.