Artificial insemination is a method used in animal husbandry to genetically upgrade stock by producing good quality off springs. In humans, the process is used to induce pregnancy in case of reproductive blocks.
Sperm from a donor of high genetic quality is collected, tested and counted under the microscope. The samples are stored in fine glass tubes and frozen in liquid nitrogen. This makes it possible for samples to be sent all over the world without the donor having to leave the area. During the actual process of artificial insemination, sperm samples are introduced into the opening of the wombs by means of a syringe to which a long tube is attached. Entire herds may be impregnated at a time using samples from a donor of high quality. In humans, the process is used if there is a blockage in the mouth of the womb. In this case the sperm is directly introduced into the womb itself.