Triangles of the Neck Flashcards
Name the borders of the Anterior Triangle of the neck.
Borders: L and R
Posterior- SCM
Superior- Inferior border of the mandible
Anterior- midline of anterior neck
Name the borders of the Posterior Triangle of the neck.
Borders: L and R
Inf.- Clavicle
Ant.- SCM m
Post.- Trapezius m
Name the borders of the Submental Triangle and its contents
Borders: Unpaired only one, inferior surface of mandible just posterior to the mentum
Base-hyoid
Angles- anterior L and R digastric mm
Contains: nothing
Name the borders of the Submandibular Triangles and its contents
Borders: L and R inferior to the lateral mandible
Posterior belly of digastric m
Anterior belly of diastric m
Body of mandible
Contains:
Submandibular glands -salivary glands
Facial a. and v.
Name the borders of the Carotid Triangle and its contents
Borders: L and R surface of neck lateral to the Thyroid Cart. and inferior to the hyoid.
Post. belly of digastric m
SCM
Sup. belly of omohyoid m
Contains:
Carotid sheath and its contents–
Common carotid a. and carotid bifurcation–internal and external carotid a.
Internal Jugular v.
Vagus n. X
Name the borders of the Muscular Triangles and its contents
Borders: L and R lateral to the laryngeal cart. (adam’s apple) midline of the neck
Superior belly of the onohyoid m
SCM
Ant. midline of neck
Contains:
Infrahyoid mm
Thyroid Gland
Larynx (laryngeal and tracheal cart.)
Name the borders of the Supraclavicular Triangle (Subclavian Triangle) and its contents.
Borders: L and R lateral neck just superior of the clavicle
Inf. belly of omohyoid m
Clavicle
SCM
Contains:
Subclavian a. and v.
Scalene mm
Phrenic n and elements of the Brachial plexes
Name the borders of the Occipital Triangle and its contents
Borders: L and R of the posterior lateral sides of the neck
Trapezius mm
SCM
Inf. belly of omohyoid m
Contains:
Cranial n. Xl, Accessory n.
Several cutaneous n. from the cervical plexes
Name the borders of the Scalene Triangle and its contents and their clinicle significance
Borders:
!st rib
Ant. Scalene m
Middle Scalene m
Contains:
Exiting form the triangle– Subclavian a. (Subclavian v. enters neck ant. to the ant. scalene in the subclavian groove)
–Roots of the brachial plexes
Clinical Significance: Brachial plexes and/or subclavian a. are sublect to possible compressin @ this location leading to neurovascular problems in upper extremity.
