Final answer:
The backward tilting of the entire uterus as a whole unit is called Retroversion.
Step-by-step explanation:
The correct term that describes the backward tilting of the entire uterus as a whole unit is Retroversion. Retroversion occurs when the uterus tilts backward instead of its normal forward position. This can be caused by various factors such as pregnancy, endometriosis, or pelvic inflammatory disease.
Retroversion can sometimes cause symptoms such as lower back pain, painful intercourse, or difficulty inserting tampons. Treatment may not be necessary unless symptoms are severe and affecting daily life. In such cases, a doctor may recommend exercises to strengthen the pelvic floor muscles or, rarely, surgery to reposition the uterus.