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Question
Discuss about knee-jerk reflex.
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Solution
- Knee-jerk is also known as a patellar reflex is caused by striking the patella or knee tendon.
- It produces a signal that travels back to the spinal cord and synapses without interneurons to the spinal cord.
- From this region, an alpha motor neuron conducts an efferent impulse back to the quadriceps muscles which triggers contraction.
- This contraction coordinated along with the relaxation of the antagonistic flexor hamstring muscle makes the leg to kick.
- Knee-jerk is also known as a patellar reflex is caused by striking the patella or knee tendon.
- It produces a signal that travels back to the spinal cord and synapses without interneurons to the spinal cord.
- From this region, an alpha motor neuron conducts an efferent impulse back to the quadriceps muscles which triggers contraction.
- This contraction coordinated along with the relaxation of the antagonistic flexor hamstring muscle makes the leg to kick.
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