Old World rat snakesEdit. 1  Twin-spotted rat snake, Elaphe bimaculata Schmidt, 1925. 2  King rat snake, Elaphe carinata (GÃ¼nther, 1864) 3  Japanese rat snake, E. climacophora (H. Boie, 1826) 4  David's rat snake, E. davidi (Sauvage, 1884) 5  Dione rat snake, E. dione (Pallas, 1773) 6  Japanese four-lined rat snake, E. quadrivirgata (H. Boie, 1826)
Making the world better, one answer at a time. The receptor in the reflex arc of a stretch reflex are 'muscle spindles' which are spindle shaped receptors distributed throughout the belly of the muscle.
Stretch reflexes are initiated by tapping a tendon, which stretches the muscle the tendon is attached to (the Quadriceps femoris muscle). This stimulates the muscle spindles and causes reflex contraction of the stretched muscle or muscles, which resists further stretching.tretch reflexes are initiated by tapping a tendon, which stretches the muscle the tendon is attached to (the Quadriceps femoris muscle). This stimulates the muscle spindles and causes reflex contraction of the stretched muscle or muscles, which resists further stretching.