This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Through which of the following ligaments of the uterus does Sampson's aery run? 
Select and explain. 
A. Broad ligament, B. Round ligament, C. Cardinal ligament, D. Suspensory ligament
B: Round ligament
Answer: B: Round ligament 
Explanation: Sampson aery is a branch of uterine aery and it runs through the round ligament of the uterus. The round ligament originates below and anterior to the origin of the fallopian tubes and it extends laterally and downward to the inguinal canal, through which it passes to terminate in the upper poion of the labium majus. Ovarian vessels traverse through the suspensory ligament of the ovary. A peritoneal fold that extends beneath the fimbriated end of the fallopian tube to the pelvic wall forms the suspensory ligament of the ovary. Ref: Cunningham F.G., Leveno K.J., Bloom S.L., Hauth J.C., Rouse D.J., Spong C.Y. (2010). Chapter 2. Maternal Anatomy.