Final answer:
The ovary is the part of the female pelvis with a dual blood supply, receiving blood from the ovarian artery and the ovarian branch of the uterine artery. The correct option is 4.
Step-by-step explanation:
The part of the female pelvis that has a dual blood supply is the ovary. The ovaries are the gonads in females that are responsible for producing eggs (oocytes) and secreting sex hormones like estrogen and progesterone. Each ovary is held within the abdominal cavity by a system of ligaments and contains a medulla and cortex.
The medulla is well vascularized with blood vessels, which supply the surrounding ovarian cortex. The cortex houses the developing follicles, each containing an immature egg.
The dual blood supply to the ovary comes from two major vessels: the ovarian artery, which arises directly from the aorta and supplies blood to the ovary, and the ovarian branch of the uterine artery, which supplies blood to the uterus and connects to the ovarian blood supply.
This dual blood supply is important for the functionality of the ovaries, especially during the menstrual cycle when there is significant activity and change occurring within the ovarian follicles. The correct option is 4.