FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY
Sperm cell. Artwork showing the structure of a sperm cell, or spermatozoon, the male sex cell. It consists of a tapered head (red) that contains the genetic material, a basal body (top right) that contains mitochondria (light blue) that provide energy for the cell, and a tail (centre and bottom) that beats to propel the sperm. A sperm's tail's ability to move is partly due to the arrangement of microtubules (part of the cell's cytoskeleton, green) within the tail. The microtubules are arranged in a central axoneme with two central single microtubules and nine peripheral double microtubules. Surrounding the microtubules are dense fibres (blue and orange), which provide rigidity and protection to the tail.
Model release not required. Property release not required.