Semen Production in the Quran: Difference between revisions

In embryonic stages, the reproductive organs of the male and female, i.e. the testicles and the ovaries, begin their development near the kidney between the spinal column and the eleventh and twelfth ribs. Later they descend; the female gonads (ovaries) stop in the pelvis while the male gonads (testicles) continue their descent before birth to reach the scrotum through the inguinal canal. Even in the adult after the descent of the reproductive organ, these organs receive their nerve supply and blood supply from the Abdominal Aorta, which is in the area between the backbone (spinal column) and the ribs. Even the lymphatic drainage and the venous return goes to the same area.}}Critics argue that Zakir Naik incorrectly present the biology of the phenomenon he describes above. The original position of the cells, they note, are destined to develop into spermatogonia (sperm producing cells) and is not ventro-medial to the kidneys (where these cells develop) but the wall of the yolk sac:{{Quote|{{cite web|url= http://web.indstate.edu/thcme/duong/EMBRYOL.html|title= Urogenital system embryology|publisher= Indiana University School of Medicine|author= Taihung Duong, Ph.D.|date= accessed February 9, 2014|archiveurl= http://www.webcitation.org/query?url=http%3A%2F%2Fweb.indstate.edu%2Fthcme%2Fduong%2FEMBRYOL.html&date=2014-02-09|deadurl=no}}|Testes and ovaries are derived from the mesodermal epithelium (mesothelium) lining the posterior abdominal wall, the underlying mesenchyme and the primordial germ cells.

The primordial germ cells form in the wall of the yolk sac during week 4. They later migrate into the developing gonads at week 6 and differentiate into the definitive germ cells (oogonia / spermatogonia).}}If Naik’s assertion that the verse refers to the embryonic testes is accepted, it is not evident whether the gonads are located where he claims, i.e. between the spinal column and the eleventh and twelfth ribs. This cross-sectional diagram of the human embryo shows the gonads at or around the level of the placenta:<center>[[Image:Gondev154.gif]]</center>As a result, it is not correct that the embryonic testes is located specifically between the spinal column and the eleventh and twelfth ribs as the gonadal or genital ridge (precursor of the gonads) is commonly believed to lie medial to the lower part of the mesonephros, while the adult kidney actually develops from the metanephros.