Among blood, muscle, tendon, and bone, which has the fastest speed of sound?

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Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

Among blood, muscle, tendon, and bone, which has the fastest speed of sound?

Explanation:
Sound travels fastest in materials that are very stiff, because greater rigidity lets a compression wave move through the material more quickly, with density playing a secondary role. Bone is highly mineralized and extremely stiff, so it transmits sound waves much faster than soft tissues. Tendons are fairly stiff too, but not to the same extreme as bone, while muscle and blood are more compliant and thus slow the propagation of sound. So among these tissues, bone has the fastest speed of sound.

Sound travels fastest in materials that are very stiff, because greater rigidity lets a compression wave move through the material more quickly, with density playing a secondary role. Bone is highly mineralized and extremely stiff, so it transmits sound waves much faster than soft tissues. Tendons are fairly stiff too, but not to the same extreme as bone, while muscle and blood are more compliant and thus slow the propagation of sound. So among these tissues, bone has the fastest speed of sound.

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