This the outside of the front of the hard drive and what you see before you open it.
This is the inside of the hard drive. Here, you can see the two disks-called platters- which are stacked on top of eachother with a gap between eachother with support of other metal pieces surrounding the spindle, the read/write head to the side of the platters, and the ribbon cable attached to the heads and the logic board.
This is where the inside of the case of the hard drive connects to the circuitry through the ribbon cable.
This is the front of the circuitry where you can see each component which makes up the hard drive.
This is what the case of the hard drive looks like with the platters removed.
This is the back of the circuitry wheich connects to the hard drive case with a thin layer of foam between the two.
This is ta small box filled with activated carbon pellets with the job of filtering the air of the hard drive to ensure it isn't humid and that there aren't any outgassing materials in it. These balls prevent any issues during the operation of the hard drive.
This is what the inside of the hard drive case looks like completely with all of the components removed.
This is the back of the hard drive case with the circuitry removed.