main lipids in human cell , chemistry assignment help

hi 
need ur help to know what the composition of a human cell membrane?
 so I found the main lipids in human cell are  phosphoglycerides, sphingolipids, and cholesterol. but i dont feel confident to write it on my report if u could help 
i put the link in case u need it but plz make it in details
http://www.wiley.com/college/karp/0471465801/samplechapter/ch04.pdf