In stretch reflex, the stimulus is
The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle. It is a monosynaptic reflex which provides automatic regulation of skeletal muscle length.Ref: Ganong&;s review of medical physiology 23rd edition Page no: 158
Change in muscle length
Change in muscle tension
Pain in muscle
Cessation of blood supply
Nervous system