[Functional morphology of the maxillo-mandibular apparatus in the miniature swine MINI-LEWE. 8. The development of the intramuscular nerve ramification pattern in the masticatory muscles].

: Postnatal changes in the intramuscular innervation pattern of the masticatory muscles of the miniature pig MINI-LEWE are only gradual. There are no definite relationships between the paths of nerves and the positions of the fasciae. The few anastomoses found were in the masseter muscle. The only other nerve found to be implicated in the motor innervation of the masticatory muscles was the motor root of the trigeminal nerve. Innervation studies are a good way of identifying the bounds of muscles: the masseter and zygomaticomandibularis muscles, for instance, are innervated jointly by the massetericus nerve, so that the zygomaticomandibularis muscle can be regarded as belonging to the masseter muscle.