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Cross extensor reflex

  • 13 Jul 2018 12:23 PM
    Message # 6380494
    Adarian (Administrator)

    I call it remove base(foot) to replace base(foot), also known as cross extensor reflex. 

    The crossed extensor reflex is also known as the Cross-body Motor Reflex and is one of the Somatic Reflexes we discussed previously.

    Let's look at a practical example of stepping on a nail with your right foot. Naturally, the right leg will contract, via the flexor muscles, to withdraw the foot from the source of the pain. Ouch! At the same time, the right leg's extensor muscles will relax to facilitate the process with minimal resistance.

    Meanwhile, the left leg will experience the exact opposite function and the leg will lock via the extensor muscle extension while the flexors relax. This is done to allow the left leg to maintain complete body weight. This is known as a contralateral reflex since opposite things happen on the opposite side of the body.

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