Withdrawal reflex
Withdrawal reflex is achieved by contraction of flexors (the muscle should be excited) and inhibition of extensors (occurs simultaneously).
Protective reflex, helps to avoid noxious stimuli by flexion, hence known as flexion reflex. Ex. Withdrawal of limb if noxious stimuli is applied to the limb. This reflex is poly synaptic
Crossed extensor reflex
To avoid noxious stimuli there will be withdrawal of limb and is associated with alteration of posture involving extensors of unaffected limbs to support the body.
Neurons involved are same as that of withdrawal reflex and also include neurons that control the extension of opposite limbs.
Extensor thrust reflex
When pressure is applied to the footpad it causes simultaneous contractions of flexors of the digits and the extensors of elbow which extend the limb into a supporting column which are initiated by myotatic reflex.