Depending on the machine, this will be a button, or a lever, that allows you to stitch backward to secure the end of a seam.

• Stitch Pattern Control
• Reverse Stitch Control
• Stitch Length Control
• Bobbin

This lever feeds thread from the spool to the needle

• Throat plate
• Foot control
• Thread take-up lever
• Presser Foot

A set of metal "teeth" that move the fabric during stitching

• Bobbin
• Tension Control
• Feed Dogs
• Handwheel

This HOLDS the bobbin and is found beneath the throat plate.  

• Throat Plate
• Presser Foot
• Tension Control
• Bobbin Case

A lever that raises and lowers the presser foot

• Presser Foot Lifter
• Feed Dogs
• Foot Control
• Bobbin

A small, flat spool that holds the bottom thread.  

• Bobbin
• Throat Plate
• Foot Control
• Feed Dogs

This is the metal plate under the machine needle.  On most machines, the throat plate is also etched with seam-allowance-markings for accurate sewing.

• Handwheel
• Feed Dogs
• Throat PLATE
• Tension Control

A dial for adjusting the tightness or looseness of the needle thread - NEVER TOUCH THIS DIAL!!

• Bobbin
• Bobbin Winder Spindle
• Throat Plate
• Tension Control

This holds the fabric firmly into place, against the feed dogs, for sewing.

• Handwheel
• Sewing
• Thread Take-up lever
• Presser Foot

This stitch control can be adjusted to make different stitching patterns

• Throat Plate
• Stitch Pattern Control
• Thread Guides
• Foot Control