Human Fertilisation #2
by Pasieka
Title
Human Fertilisation #2
Artist
Pasieka
Medium
Photograph - Photograph
Description
Sperm fertilising egg. Computer illustration of sperm cells (at top) approaching a human egg (lower right). One of the sperm is fertilising it. Women usually produce one large egg (ovum), whereas men release some 300 million much smaller sperm (spermatozoa) which travel with whiplash movements of their tails through the uterus to reach the egg. A few hundred sperm survive this journey and encounter the egg in the fallopian tube. Only one sperm can penetrate the egg's thick outer layer (zona pellucida) and fertilise it by fusing with its DNA (deoxyribonucleic acid) genetic material. When this occurs, the egg membrane forms a barrier to other sperm.
Uploaded
October 7th, 2018
Embed
Share
Comments
There are no comments for Human Fertilisation #2. Click here to post the first comment.