Peristalsis plays a critical role in the movement of food in the human gastrointestinal tract. It is the rhythmic contractions and relaxations of smooth muscles activated by peristaltic reflex that propagates in a wave to propel food along the gut (Dale et al.,2015). The myenteric plexus in the small intestine contains nerves and stretch receptors that are important for eliciting a neuronal peristaltic reflex response. A peristaltic reflex is induced when the stretch receptors are stimulated, causing the depolarisation of sensory neurons to release an excitatory neurotransmitter. This in turn stimulates the interneurons to release acetylcholine (ACh). Subsequently, ACh binds to the nicotinic receptors of the excitatory motor neurons, causing
