inviTRA Egg and sperm donation magazine
What is it?
Law in the UK
Pregnancy with donor eggs
Egg donation & surrogacy
Becoming an egg donor
What is it?
Becoming a sperm donor
Definition and options
In vitro fertilization
Intracytoplasmic sperm injection
Preimplantation genetic diagnosis
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Sperm’s journey to the egg
Since its formation to the fertilization of the egg, spermatozoids have to cross a complicated path full of obstacles. Only one spermatozoid will overcome all the barriers and fertilize the egg, creating therefore...
Cryptozoospermia or cryptospermia is a sperm pathology that may lead to male infertility and is characterized by a low sperm quantity. Actually, it causes the same symptoms as oligozoospermia, but more severely.
In order to achieve a natural pregnancy, a minimum concentration of motile sperm is required. Likewise, there should be no obstruction of the Fallopian tubes and sexual intercourse should take place during the' ...
It is measured by the reproductive potential of the man. It encompasses the testicle’s ability to produce quality sperm capable of fertilizing the egg and the man’s ability to copulate.
Semen is ticker in the moment of ejaculation and, once inside the vagina, it becomes more liquid so it can travel through the Fallopian tubes.
Techniques for sperm capacitation
Sperm capacitation to fertilise an egg occurs naturally within the female genitalia, but when it comes to assisted reproduction, it should be performed artificially at the laboratory.
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