Superficial fascia contain platysma, cervical branchVII, transverse cutaneous
Investing layer of deep cervical fascia
Floor
Thyrohyoid muscle
Hyoglossus
Middle constrictor
Inf. constrictor
Arteries
Common carotid artery , Carotid sinus, Carotid body
Internal carotid artery
External carotid artery with branches(sup. thyroid, lingual, facial,ascend. pharyngeal, facial
Veins
Pharyngeal vein Lingual vein
↓ X ↓
Common facial → Internal jugular
Nerves
Vagus→ sup. laryngeal→ext. & int. laryngeal
Spinal accessory
Hypoglossal→Upper root of ansa cervicalis & br. to thyrohyoid
Sympathetic chain
Lymph Node
Deep cervical node
Juglodigastric node
Jugulo-omohyoid node
Other
Carotid sheath & it’s content
Muscular
Anterior
Ant. median line of neck from hyoid to sternum
Postersuperior
Sup. belly of omohyoid
Posteroinferior
Ant. border of sternocleidomastoid
Infrahyoid muscles arranged in 2 layers:
Superficial:Sternohyoid, Omohyoid
Deep:Sternothyroid, thyrohyoid
Ventral rami of 1, 2, 3 cervical spinal nerve
Exam Question
Anterior triangles of neck are-Submental, Digastric, Carotid, Muscular.
Submental lymph nodes drain superficial tissues beliw tge chin, central part of lower lip, adjoining gums, anterior part if floor of mouth & tip of tongue.
On both sides submental triangle is bounded by Anterior belly of diagastric.
Posterior boundary of carotid triangle is formed by anterior border of sternocleidomastoid.
Hypoglossal nerve is a content of both digastric & carotid triangles.
Structure superficial to mylohyoid in anterior digastric triangle is Mylohyoid artery & nerve
Floor of digastric triangle is formed by mylohyoid (anteriorly) & hyoglossus (posteriorly)
Infrahyoid ribbon muscles are the chief contents of muscular triangle.
Don’t Forget to Solve all the previous Year Question asked on Anterior triangle of neck