This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen & Pelvis, Subject name: Anatomy
Which of the following is the artery for endometrial blood supply? 
Select and explain. 
A. Endometrial artery, B. Myometrial artery, C. Spiral artery, D. Cervical artery
C: Spiral artery
Answer: C: Spiral artery 
Explanation: Ans. C Spiral arteryRef: Gray's Anatomy E-book, P 172* Spiral artery, a branch of radial artery, chiefly supplies endometrium.* Endometrium and myometrium are supplied mainly by ovarian and uterine artery.