Myotatic Reflex: How Muscles Respond To Stretch
Question 1. What is chronaxie, rheobase and utilization time
Answer:
Rheobase:
- The weakest current strength which can excite a tissue if allowed to flow through it for an adequate time is called rheobase
Utilization time:
- The time for which current must be applied is called utilization time.
Chronaxie:
- The length of time for which a current of twice rheobase intensity must be applied to produce a response is called chronaxie.
Question 2. Stretch reflex.
Answer:
Stretch reflex is the reflex contraction of muscle when it is stretched.
Stimulus for the reflex is stretch to the muscle, response is contraction of the muscle and the neurotransmitter released is glutamic acid.
Stretch reflex is the basic reflex involved in maintenance of posture
It is also called myotatic reflex
It is monosynaptic reflex and quickest of all reflex.
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