Changes

**In goats 12 weeks

**In goats 12 weeks

*Closes by reflex stimulation of the cranial laryngeal branch of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]]) (takes 2-5 seconds)

*Closes by reflex stimulation of the cranial laryngeal branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]]) (takes 2-5 seconds)

*With time becomes a conditioned reflex

*With time becomes a conditioned reflex