Sewing Machine Feet Help

[ambiguousness.livejournal.com]

Greetings to everyone. I was hoping to get some help with my mom's sewing machine feet. I have just used the basic one that has always been attached, but was always curious about the other feet. I was wondering if you sewing machine-savvy ladies could help identify these mystery feet? I've tried to look up resources online, but it hasn't helped very much and the pictures aren't very detailed. I also checked the memories, and found a sewing resource site, but it only had pictures of the basic feet.



1. this is the foot that I have always used for everything


2. I *think* this is a zipper foot? The back part slides back and forth.




4. it has this weird curly thingy


5. I think this is a "shank"? What does it do?


6. Okay, I have NO idea what this is. I don't even know if it's part of a foot or not.

Thank you guys SO much in advance! :)