Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Ultrasound, a diagnostic technology, uses high-frequency vibrations transmitted into any tissue in contact with the transducer.
What diagnostic technology uses high-frequency vibrations transmitted into any tissue in contact with the transducer?

Endoscopes are used to explore the body through various orifices or minor incisions.
Endoscopes are used to explore the body through various orifices or these?

The long bone work as lever.
What type of function does the long bone perform?