Talk:Spermatogenesis

message: According to "endocrinology, an integrated approach" : Sperm can be stored up to 5 weeks in the tail of the epididymis and vas deferens before they are released at ejaculation. In the absence of ejaculation sperm dribble into the urethra and are washed away in the urine. In men who have undergone a vasectomy (ligation of the vas deferens) sperm build up behind the ligation and are either removed by phagocytosis in the epididymis or leak through the epididymal wall. 5/06/06
:Do you have the full source info for this statement? Ya know, so others can read the source text? - Jak (talk) 02:34, 9 July 2006 (UTC)
thread_title: Storage

message: The medieval theory of spermatogenesis was quite different from this.  They believed that the sperm was actually male's "purest form" of blood, and that when ejaculation occured in the vagina, this sperm mixed with the cooler female blood, which created some sort of "bond" between the two.  It was one of the reasons to forbid premarital sex, because the partners would then be linked somehow and a further marriage would be incestious.  I don't know a lot about the subject, but i do remember reading it one book, i'll try to find that source.  Should this be included in this article, since it is so different, or to another page?  --MateoP 16:38, 2 February 2006 (UTC)
replies: text: A very fine detail of the history of medicine. The science should be established before the history. Maybe later - Jak (talk) 02:47, 9 July 2006 (UTC)
thread_title:  Medieval Spermatogenesis 

message: Another Question: I have heard things like "50 drops of blood being used for the creation of one drop of Semen"!! Seriously. Can someone tell me whether there is any role of blood in Spermatogenesis? Why is that we feel pale and exhausted after sex?? I have been doing a serious peruse of wikipedia for this!!
:If this is true, it will be that one drop of semen is the filtrate of 50 drops of blood. The other 49 drops of blood will continue to flow around the body. You feel exhausted because of all the exercise and/or overheating - Jak (talk) 02:47, 9 July 2006 (UTC)
thread_title: Blood used

message: I've come across the above terms in the context of male infertility (including the Pedia articles on it) but can't find decent definitions anywhere. Could someone please put some in if possible? Thanks! --Tyranny Sue (talk) 01:18, 15 February 2010 (UTC)
thread_title:  'pre-testicular' and 'post-testicular'? 

message: Some idea would be nice.  10/day/gonad?  Billion/day/gonad? --Michael C. Price talk 23:09, 17 February 2010 (UTC)
thread_title: How many?

message: Ok, I dont mean to be too picky, but im pretty sure the chromosmal orientation in primary spermatocytes and secondary spermatocytes is incorrect as discussed in this topic. This is how I understand it, and I have some literature that also infers what I am saying.
Spermatogonia (2N)
(Mitosis)
Primary Spermatocytes (4N)
(Meiosis 1)
Secondary Spermatocytes (2N)
(Meiosis 2)
Spermatid & beyond (N)
This may look crazy at first but it makes way more sense. How can you go through meiosis 2 without halving the chromosome count?? This always perplexed me until i looked into it furhter and found literature on the subject. Here it is:
1)Kimura, Y. (1995). Development of Normal Mice from Oocytes Injected with Secondary Spermatocyte Nuclei (in: BIOLOGY OF REPRODUCTION 53, 855-862)
2)Ogura, A. (1998). Development of Normal Mice from Metaphase I Oocytes Fertilized with Primary Spermatocytes (in: Proceedings of the National Academy of Sciences, Vol. 95, No. 10 pp. 5611-5615)(first paragraph of abstract)
3)Mays-Hoopes, L.L. (1995). Preparation of Spermatogonia, Spermatocytes, and Round Spermatids for Analysis
of Gene Expression Using Fluorescence-Activated Cell Sorting. (in: BIOLOGY OF REPRODUCTION 53, 1003-1011)
4)This website lays it out pretty clear http://www.expertreviews.org/01002320h.htm
Hope someone can address this...I think the spermatocyte page needs an update too Jimboapu (talk) 03:58, 25 April 2008 (UTC)
replies: text: The previous commentor is correct, and I have adjusted the table in the article to reflect this.  I have used the copy number prior to replication/division for all cells (G1 for primary spermatocytes) to be consistent, and have indicated that the chromosome numbers refer to humans only, of course!  Now the table is uglier than it was, but at least the N is fixed, and in the ploidy column where it belongs.  Perhaps it would be better to put ploidy/DNA copy number in one column, and human chromosome/chromatid counts in another?  Grothmag (talk) 21:09, 22 December 2010 (UTC)
thread_title: ploidy

message: What the hell! Sub-section spermatocytogenesis is to be merged with Spermatocytogenesis. While the link to main article exists. And both articles are no the same! So why  is used?117.222.90.195 (talk) 12:37, 17 June 2015 (UTC)
replies: text: I don't fully understand what you are trying to say, but there is no point in leaving a 3-year old merge proposal in place, so I have removed it. If nobody has followed up the proposal in 3 years, it is unlikely anyone is going to do it now. The editor who uses the pseudonym "JamesBWatson" (talk) 14:18, 17 June 2015 (UTC)
replies: text:  I meant, how can those two things which are so different be merged?117.198.178.102 (talk) 16:10, 17 June 2015 (UTC)
replies: text: I don't know enough about the subjects to make a reasonable judgement of whether merging them would be reasonable or not. Since it was a suggestion made over three years ago by an editor who just went away and left it, and nobody ever did the merging, it seems to me to be a purely academic question. However, if you are interested, the reasons put forward for the merge proposal are at Talk:Spermatocytogenesis. The editor who uses the pseudonym "JamesBWatson" (talk) 16:15, 17 June 2015 (UTC)
thread_title:  Is there any rule that I missed? 

message: Substituted at 06:41, 30 April 2016 (UTC)
thread_title: Assessment comment

message: Explain the stages of spermatagensis 41.191.104.124 (talk) 15:24, 16 April 2022 (UTC)
thread_title:  Biology