anterior belly of digastric imuscle nnervation

The anterior belly is attached to the internal surface of the mandible, in the digastric fossa. These bellies (anterior and posterior) are linked by an intermediate rounded tendon, which crosses the stylohyoid ligament and attaches to the hyoid bone. 1 Introduction The digastric muscle is located in the suprahyoid region and frequently has two bellies. Keywords: digastric muscle, accessory belly, anatomical variation. Moreover, the accessory digastric muscle affects diagnostic imaging and therapeutic procedures in head and neck surgery and must be considered in procedures involving this area.

Anatomic variations of the digastric muscle may influence mastication and deglutition. The accessory fibers, on both sides, originated from the anterior digastric muscle and inserted medially to the digastric fossa. They were composed of two segments, one long and one short, on both sides, and when observed together these appeared to form the letter “X”. The accessory bellies were similar but not symmetrical. During dissection of this region of an embedded cadaver, an accessory anterior belly of digastric muscle was observed bilaterally. The anterior belly of the digastric muscle is localized superficially to the mylohyoid and deeply to the platysma muscle. This muscle participates in deglutition and mandibular movements. Professor of Morphology, Nove de Julho University – UNINOVE, Rua Vergueiro, 235/249, CEP 01504-001, São Paulo, SP, Brazil *E-mail: The digastric muscle is a suprahyoid muscle composed of two bellies connected by an intermediate tendon. 72 Case report Anatomical variation of the anterior belly of the digastric muscle: case report and clinical implications Abstract Mascaro, MB.*, Picoli, LC., Santos, FM., Bonsi, AB., Souza, MR.

Anterior belly of digastric imuscle nnervation