Answer:
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The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
Most reasonable answer is the swallowable camera one. mris and cat scans were invented in the 70s and the rest of the answers are around the 1800s or before.
I just finished a topic in science on this.. lemme try my best:
4: PCR (Polymerase Chain Reaction)
5: Genetic Engineering
6: Restriction Enzymes (I think)
Let me know if I’m wrong!
