Sorry it took so long to give hints:
Pic 1 is used to check how these organs are working.
Pic 2 is a generic version of something we used to use when we were younger.
Pic 3 you should know what it is.
I remember coming home from school, latchkey kid, and sit in front of the TV with MTV playing music videos and doing and finishing my homework until my mother got home, then going out to find my friends, who usually didn't do their homework, and play until sundown.
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