Its a premature sperm or a sperm that is not yet matured.
Male sex cells (gametes) are known as spermatozoa - or simply sperm.
Sterile = No sperm. No sperm = No biological kids.
The destruction of sperm is called sperm cell death or sperm cell apoptosis.
Its not weak, actually its relax. Ex: When we came from work and lay on sofa for relax, after couple of minutes when we try to stand up we feel very lazy, its not weak but it is because of body relaxation.
Boy sperm are generally faster than girl sperm.
No, female sperm do not have a longer lifespan compared to male sperm.
Sperm. This is one of the words that is the same as plural as it is singular.
the sperm just die
The tail of the sperm whips and forces the sperm forward. Y sperm are smaller, lighter and faster, X sperm are larger, heavier and slower but can keep going for longer. Y sperm are sprinters, X sperm are long distance runners.
Yes of course, there is practically no difference if you are standing up or laying down after sex. As long as they are fit sperm will do their job either way
no There's some loss, but that's not important ... there's even some loss when you're supine.