What is the role of prostaglandins , citric acid , fibrinogen in seminal plasma

Dear Priyanka

 

The seminal gland's secretion contains various proteins and fructose as energy suppliers for sperm motility and is also responsible for making the largest proportion of the alkaline buffer.  
The prostate secretion contains protease for fluidizing the ejaculate, which supports the motility and the further maturation of the spermatozoa.