Golgi Bottle Neuron Vs Golgi Tendon Organ

Golgi Bottle Neuron is the inhibitory interneuron which is involved in the phenomenon of Reciprocal Innervation by which the antagonist muscles relax during protagonist muscle contraction.

Now Golgi Tendon organ os involved in Autogenic inhibition or Lengthening Reaction or commonly called Inverse Stretch Reflex, by which muscles relax after a critically high muscle tension is reached, it helps to prevent muscle rupture or tendon avulsion. 

Stretch Reflex involves Muscle Spindle.

NOTE :

Golgi Tendon organ - senses muscle tension.

Muscle Spindle - senses muscle length.