The first three pictures are the casing of the camera. It prevents sunlight, and other sources of light from getting to the camera. It also hold all the other parts of the camera in place.
Photo #4 is the lens of the camera. It redirects the beams of light bouncing off the objects to peace together an form a image.
Photo #5 is the film the camera. When the shuttler opens up the light reflected off the surface of the subject strikes the emulsion.
Photo #6 is the shutter of the camera. It opens and closes between the lens and film to control how much light is let in, on to the film.
Photo #7 is the flash of the camera. The flash adds the necessary amount of light to a subject where it is dark. The flash circuit, made up of a battery and an electrical circuit, produces the flash of light.
#8 is the is the flash circuit, and photo. It makes a short flash of light when he shutter is released to get a clear image.
#9 is the gas discharge tube. This conducts an electrical current by moving electrons from one electrode to another to cause them to produce visible light (or the flash).