anterior belly of digastric imuscle nnervation

#ANTERIOR BELLY OF DIGASTRIC IMUSCLE NNERVATION CODE#

This change is based on the different embryological origin and innervation of both bellys and is related to the objectives proposed by Terminologia Anatomica, which recommends descriptive, informative and harmonic names with related bone structures, favoring scientific communication and teaching-learning morphology KEY WORDS : Digastric Muscle Digastricomastoid Muscle Terminologia Anatomica. The aim of this study was to review this term and recommend including in the name the 'mastoid' origin of the digastric muscle, denominating it digastricomastoid muscle. In its name, the digastric muscle refers to the origin of the anterior belly and to the muscular classification according to form, not mentioning the origin of its posterior belly. The anterior belly of the digastric muscle begins from the digastric fossa of the lower border of the mandible, closer to the midline near the mandibular symphysis (symphysis menti). Anterior and posterior bellys originates from the first and second arc gill respectively, the anterior belly being innervated by the mylohyoid nerve and the posterior belly by the facial nerve. From there it crosses anteroinferior towards the hyoid bone, piercing the stylohyoid muscle prior to attaching to the intermediate tendon of the digastric muscle. The anomaly was discovered in the cadaver of an 84-year-old Japanese male bequeathed for a training seminar in gross anatomy at Kumamoto University in 2003.

The anterior belly originates in the digastric fossa of the mandible and posterior belly in the mastoid notch of the tempral bone, both are inserted through a fibrous band, derived from the pretracheal layer of the deep cer- vical fascia on the body and greater horn of hyoid bone. Abstract We came across a very rare case in which the anterior belly of the digastric muscle was innervated by the twigs of the facial nerve in addition to those of the mylohyoid nerve.

#ANTERIOR BELLY OF DIGASTRIC IMUSCLE NNERVATION CODE#

The digastric muscle appears mentioned in Terminologia Anatomica with the code A04.2.03.006, it belongs to the group of the suprahyoid muscles and is formed by two bellys (latin: gaster) joined by an intermediate tendon.

Anterior belly of digastric imuscle nnervation