Floor Muscles Of Digastric Triangle

Superior posterior belly of the digastric muscle.

Floor muscles of digastric triangle.

In front by the anterior belly of the digastricus. Lateral medial border of the sternocleidomastoid muscle. A major landmark of the submandibular triangle is the submandibular gland innervated by the facial nerve. Investing fascia covers the roof of the triangle while visceral fascia covers the floor.

Digastric or submandibular triangle. 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 muscle is composed of two bellies anterior and posterior connected by an intermediate round tendon. Suprahyoid muscles digastric ant and post belly mylohyoid geniohyoid and stylohyoid.

The posterior belly of digastric muscle forms the superior border of the carotid triangle. Infrahyoid muscles omohyoid sternohyoid sternothyroid and thyrohyoid. However other muscles that have two separate muscle bellies include the ligament of treitz omohyoid occipitofrontalis. The digastric triangle is one of the paired triangles in the anterior triangle of the neck.

Mastoid process of temporal bone. 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. Muscles digastric muscle stylohyoid geniohyoid mylohyoid hyoglossus middle pharyngeal constrictor nerves mylohyoid nerve cn v. This paired triangle contains some very important structures such as the common carotid artery internal carotid.

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. The digastric muscle divides the anterior triangle of the neck into three smaller divisions. It lies below the body of the mandible and extends in a curved form from the mastoid. Above by the lower border of the body of the mandible and a line drawn from its angle to the mastoid process.

2 bellies of digastric anterior. On floor of mouth between mandible and genioglossus. Below by the posterior belly of the digastricus. The two bellies of the muscle have different embryonic origins and hence are supplied by different cranial nerves.

The carotid triangle the submental triangle and the submandibular triangle. Muscles nerves blood vessels glands. It is covered by the integument superficial fascia platysma and deep fascia ramifying in which are branches of the facial nerve and. This salivary gland can be described as having two lobes which are divided by the posterior border of the mylohyoid muscle.

Digastric fossa on the deep surface of symphysis menti of the mandible. The anterior triangle is subdivided by the hyoid bone suprahyoid and infrahyoid muscles into four triangles.