The study of Embryology will testify the correctness of the statement of Qur'an that the fluid that gushes forth from between the backbone and the ribs.
During the development of the fetus : The gonads that is the testicles and the ovaries they originate at a site which is between the back bone ( spine ) and the ribs.
- Later in the development of the fetus the testis descends down into the scrotum out of the abdominal cavity into the scrotal sac.
- The evidence of this still : is that the blood supply to the testis comes from the Aorta ( a major blood vessel ) high up in the abdomen.
-So even though the testis is in the scrotal sac down there blood supply comes from a artery which signifies the original position of the testis that is between the spine and ribs.
So the nourishment for the formation of semen is from the place as stated above.
So the seminal fluid coming out of the testis though apparently down in the sac , the blood supply and the origin of the testis is at the level of the last 2 ribs and the vertebral column.
Similarly the ovary descends too , during the embryonal development , but it comes to rest in the pelvis. one on each side.
So understanding Embryology will help understand the statement in Qur'an.
By the way the testicular descent is the cause of inguinal hernias that are seen in men most often and not in women.