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Line 35:
**In deer 16 weeks
**In deer 16 weeks
**In goats 12 weeks
**In goats 12 weeks
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+*Closes by reflex stimulation of the cranial laryngeal branch of the vagus nerve (takes 2-5 seconds)
+
+*With time becomes a conditioned reflex
+
+*Closure consists of two movement
+**Lips of the groove become firmly opposed and shorten
+**Lips become inverted and twisted around the axis of the right lip of the groove, drawing the reticular mucosa over the right lip