Some IVF clinics copy our services, texts, presentations and arrange seminars in the same locations. Please be attentive to which seminar you register and which clinic you land in. Dr. Olga Zaytseff and her team runs own clinic O.L.G.A. in St. Petersburg and does not work for any other clinics. Lectures at our seminars are personally done by Dr. Olga Zaytseff

Male reproductive system

The male reproductive system is regualted by hormones. The primary hormones involved in the functioning of the male reproductive system are follicle-stimulating hormone (FSH) and luteinizing hormone (LH). Both of them regulate testis function. The principle regulator of LH and FSH secretion is gonadotropin-releasing hormone or GnRH. FSH regulates production and maturation of sperm cells. LH stimulates production of the main male hormone - testosterone.

Fig. 1. Male reproductive system.

  1. Urinary bladder
  2. Ductus deferens
  3. Penis
  4. Testis
  5. Epididymis
  6. Urethra
  7. Prostate Gland
  8. Ejaculatory duct
  9. Rectum

 

Every day millions of spermatozoa are generated by the seminiferous tubules of the testes. From testicles, spermatozoa move to epididymis where further maturation takes place (Fig. 1).

 

During the ejaculation process, the spermatozoa move outside through the ductus deferens and urethra thanks to the muscles contraction. Each portion of sperm contains 300-400 millions of spermatozoa. Such a large quantity is explained by the fact that only a few hundred spermatozoa successfully reach fallopian tubes where the oocyte can be fertilized.

Male reproductive system - Sex Determination

Fig.2. Sex Determination.

The spermatozoon consists of head, neck and tail. The head carries the genetic material from the father. If fertilization is successful, this material determines sex of child (Fig. 2).

The neck provides energy for spermatozoon movement.

Male reproductive system - Spermatozoon’s structure

Fig. 3. Spermatozoon’s structure.

The spermatozoon’s tail is a "motor". It whips from side to side ensuring the spermatozoon movement (Fig. 3).

“…I am a single woman and when one is lonely, one is very sensitive…You saw me as a person and I felt that you can help me…”

Birgita

 

Different life stories, but the same dreams for a baby bring Ulrika from Norway and Willeke from Netherlands to St. Petersburg...

“…Well the Millennium shift came, the year 2000, we all remember what we did then, right? I got cancer, Hodgkin's lymphoma... And when I stand here now 17 years later, you understand that it went well! Except for one important thing…"

Hillevi


Having questions? Ask our doctors now!

A blog by Tone Bråten

A blog — to help you on your journey to become parents!

Our patients tell their stories



  • Willeke and Mario from Netherlands come to AVA-Peter for egg donation treatment… Enjoy this touching and sincere documentary by Jorien van Nes
       
    Olga is the miracle doctor who gives baby guarantee
    ALLAS.se, Sweden. 6 August 2019. Text & Malin Aunsbjerg
    More
    Cilla Holm became a mother on her own – this is her new Liv (life)
    Dagens Nyheter, Sweden. 7 May 2019
    More
    Russian baby guarantee is the Swedes’ last chance
    Svenska Dagbladet, Sweden. 7 April 2019
    More
    Mum through embryo donation
    Marie Granmar is my very dear patient from more than 8 years ago. Please listen to Marie’s interview on TV4 7 March 2019 in Sweden
    More
    "I became pregnant with an embryo adoption”
    One more story about our dear patient Cilla Holm by Tara Magazine, Sweden
    More
    Titiyo became this year's Comeback Mum: "I've broken the norm"
    More
    Monika and André pay 240,000 SEK for having a child
    More
    "Had to travel abroad to get pregnant after 8 IVF attempts in Norway"
    Interview with our patient Elin Renate by TV2 Norway
    More
    Report on us on Norwegian Television TV 2
    More
    Enjoy our dear patient Cilla's story, who has been interviewed by the "Dagens Nyheter", daily newspaper in Sweden
    More
    Report on us and our dear patient Hillevi on SVTPlay & SVTNews
    More
    FacebookInstagram