Floor Muscles Of Digastric Triangle

However other muscles that have two separate muscle bellies include the ligament of treitz omohyoid occipitofrontalis.

Floor muscles of digastric triangle. Superior posterior belly of the digastric muscle. The digastric muscle also digastricus named digastric as it has two bellies is a small muscle located under the jaw the term digastric muscle refers to this specific muscle. Digastric triangle also known as submandibular triangle is named due to it is position in the middle of the two bellies of the digastric muscle and inferior towards the base of the mandible. On floor of mouth between mandible and genioglossus.

Investing fascia covers the roof of the triangle while visceral fascia covers the floor. Suprahyoid muscles digastric ant and post belly mylohyoid geniohyoid and stylohyoid. It lies below the body of the mandible and extends in a curved form from the mastoid. Infrahyoid muscles omohyoid sternohyoid sternothyroid and thyrohyoid.

This paired triangle contains some very important structures such as the common carotid artery internal carotid. The digastric muscle is composed of two bellies anterior and posterior connected by an intermediate round tendon. Mastoid process of temporal bone. The two bellies of the muscle have different embryonic origins and hence are supplied by different cranial nerves.

Muscles digastric muscle stylohyoid geniohyoid mylohyoid hyoglossus middle pharyngeal constrictor nerves mylohyoid nerve cn v. The anterior triangle is subdivided by the hyoid bone suprahyoid and infrahyoid muscles into four triangles. Submandibular triangle is bordered by the mandible and bellies of the digastric muscle. Muscles nerves blood vessels glands.

The triangles of the neck are surgically focused first described from early dissection based anatomical studies which predated cross sectional anatomical description based on imaging see deep spaces of the neck. The digastric triangle is one of the paired triangles in the anterior triangle of the neck. In front by the anterior belly of the digastricus. The carotid triangle the submental triangle and the submandibular triangle.

The digastric muscle divides the anterior triangle of the neck into three smaller divisions. Below by the posterior belly of the digastricus. The posterior belly of digastric muscle forms the superior border of the carotid triangle. It is covered by the integument superficial fascia platysma and deep fascia ramifying in which are branches of the facial nerve and.

The carotid triangle of the neck has the following boundaries. Digastric or submandibular triangle. 2 bellies of digastric anterior. Digastric fossa on the deep surface of symphysis menti of the mandible.

Above by the lower border of the body of the mandible and a line drawn from its angle to the mastoid process. Lateral medial border of the sternocleidomastoid muscle.