The Casing-It surrounds and protects parts inside of the camera and holds other parts in place
The Shutter-Shutter opens and closes between the lens and film when pictures are taken. Lets light into film
Lens-Curved piece of plastic,It redirects light beams
Film-It is light sensitive emulsion on a plastic base,It is what the light hits to create a picture.
Flash circuit-It is what connects the battery to the gas discharge to enable the flash
Gas Discharge tube-It directs light forward,It is what creates light.