The midpiece of the mature sperm contains mitochondria that provide metabolic energy for the trip to the egg. fructose (simple sugar) is used as fuel by the sperm. from where is this fructose secreted?
seminal vesicles
The seminal vesicles, vesicular glands, or seminal glands, are a pair of simple tubular glands posteroinferior to the urinary bladder of some male mammals. Seminal vesicles are located within the pelvis.