Anterior Triangle of the Neck Flashcards
What creates the anterior boundary of anterior triangle?
Median line of the neck
The posterior boundary of the anterior triangle is formed by what?
Anterior border of SCM
What forms the superior boundary of the anterior triangle of the neck?
Inferior border of the mandible
The jugular notch in the manubrium forms what part of the anterior triangle
Apex
What constitutes the floor of the anterior triangle?
Pharynx, larynx, thyroid gland
The subcutaneous tissue containing the platysma forms what part of the anterior triangle?
Roof
What subdivides the anterior triangle into four smaller triangles?
Digastric
Omohyoid
What are the four small triangles?
Submental
Submandibular
Carotid
Muscular
Among these:
Submental
Submandibular
Carotid
Muscular
Which is unpaired?
Submental
What small triangle is inferior to the chin?
Submental
It is bounded inferiorly by the body of the hyoid and laterally by the right and left anterior bellies of the digastric muscles
Submental triangle
What forms the floor of the submental triangle?
2 mylohyoid muscles
What do you call the structure where the two mylohyoid muscles meet?
(median) fibrous raphe
What forms the apex of the submental triangle?
Mandibular symphysis
It is the site of union of the halves of the mandible during infancy
Mandibular symphysis
This forms the base of the submental triangle
Hyoid
Does the submental triangle house lymph nodes?
Yes, submental lymph nodes
Small veins unite with submental lymph nodes to form the -
Anterior jugular vein
It is a glandular area between the inferior border of the mandible and the anterior and posterior bellies of the digastric muscle
Submandibular triangle or digastric triangle
What forms the floor of the submandibular triangle?
Mylohyoid
Hypoglossus muscle
Superior pharyngeal constrictor
What gland can be seen in the submandibular triangle?
Submandibular gland
Where are the submandibular lymph nodes located relative to the submandibular gland and mandible?
Lie on each side of the gland, along inferior of the mandible
What nerve provides motor innervation to intrinsic and extrinsic muscles of the tongue?
Hypoglossal nerve (CN XII)
What nerve passes into the submandibular triangle together with nerve to mylohyoid?
Hypoglossal nerve