Film Cameras Consist of

• Lens: Focuses the image onto the film plane
• Shutter: The shutter spins and alternately opens light can pass 
• Aperture Plate: Allows light to pass through to each individual film frame
• Loop: Film is how the film is loaded into the camera
• Pull Down Claw: The claw pulls down the film and lines it up with the aperture plate (one frame at a time)
• Sprocket Wheel: Holds the film in place 

Check out this Bolex! 

Here is a film shutter: