Digastric muscle

The digastric muscle (Latin: zweibäuchiger muscle ), formerly referred to as muscle biventer mandible, is a muscle of head, seen from two different plants, which is why he is innervated by two cranial nerves. It consists of two antinodes:

• The Venter anterior (front abdomen, in animals Venter rostralis ) attaches to the lower jaw inside.
• The Venter posterior (rear belly, in animals Venter caudalis ) arises from the mastoid notch of the temporal bone ( human ) or the processus paracondylaris in pets.

In addition, the muscle is arranged in pairs, that is, it can be found respectively on the right and left half of the body. The two heads meet in the middle and form a common intermediate tendon (human, horse ) or a tendon strip. The intermediate chord is secured by a tongue on the leg body Bindegewebsschlaufe.

Function

The digastric muscle is an opener of the mouth or jaw column and is thus an antagonist of the masticatory muscles.

Innervation

The anterior belly is innervated by the mylohyoid nerve of the mandibular nerve, the posterior ramus of the digastric of the facial nerve.