Note the spiral shape of the tail. When the tip of the sperm tail moves counter clockwise (as indicated) this pushes the water molecules backwards, moving the sperm forward.
|
|
Note the spiral shape of the tail. When the tip of the sperm tail moves counter clockwise (as indicated) this pushes the water molecules backwards, moving the sperm forward. |
|
|
In these two dimensional pictures, the motion is a little harder to see. The rotating tail (end view of sperm seen at bottom) pushes water backwards propelling the sperm forward (side view at top). |
