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Biology 9 Online
OpenStudy (barbaraleanne):

how does the stretch reflex cause the quadriceps femurs muscle group to contract

OpenStudy (praetorian.10):

Tapping on the patellar tendon stretches receptors called the muscle spindles in the quadriceps muscle group of the anterior thigh. This stimulus evokes a rapid motor reflex to contract the quadriceps and shorten the muscles. This process is called the patellar reflex.

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