Maxillary Artery Mnemonic

Origin of Maxillary artery: Terminal branch of External Carotid Artery (ECA)

Derived from: 1st Arch

Divisions of Maxillary artery: 3 parts by lateral pterygoid

  1. 1st part (Mandibular part): winds around deep to neck of mandible
  2. 2nd part (Pterygoid part): travels between 2 heads of lateral pterygoid
  3. 3rd part (Pterygopalatine part): enters pterygopalatine fossa containing pterygopalatine galnglion

maxillary artery

Branches of Maxillary artery

Remember:

  1. Each of the 3 divisions gives off 5 branches.
  2. Mandibular artery, i.e. Inferior alveolar artery is a branch of maxillary artery
  3. 2nd part: Branches supply muscles of mastication and do not cross through foramina in bones (all branches from 1st and 2nd part do cross)

Branches from 1st part

Mnemonic: Mandibular part gives off branches to 5M“s:

  1. Meatus (External auditory meatus)
  2. Meninges and mater (duramater)
  3. Meckel’s cave
  4. Mandible
  5. Membrane (tympanic membrane)

Mnemonic: Remember the branches with the mnemonic “DAMIA

Clinical significance: Middle meningeal artery injury results in Extradural hematoma (EDH).

a. Deep auricular artery: External acoustic meatus

b. Anterior tympanic artery: Tympanic membrane

c. Middle meningeal artery: Duramamter and Skull bones

d. Inferior alveolar artery: Mandible

e. Accessory meningeal artery: Middle fossa duramater and Meckel’s cave (trigeminal ganglion)

Branches from the 2nd part

Mnemonic: They supply muscles of mastication which are also derivatives of the 1st arch.

a. Anterior and Posterior Deep temporal artery: Temporalis

b. Pterygoid artery: Lateral and medial pterygoids

c. Masseteric artery: Masseter

d. Buccal of Buccinator artery: Buccinator

Branches from the 3rd part

Mnemonic: Remember the 5P“s

a. Posterior superior alveolar artery: Maxilla

b. Pterygoid canal artery: Upper part of pharynx and tympanic cavity

c. Palatine – Descending palatine artery: Gives off greater and lesser palatine artery and supplies hard and soft palate respectively

d. Palatine – Sphenopalatine or Nasopalatine artery: Supplies nasal cavity

e. Pharyngeal artery: Pharynx

There’s one more branch from the 3rd part, i.e. Infraorbital artery which gives off Anterior and Middle Superior Alveolar Artery.

Clinical significance: Sphenopalatine artery is a common cause of posterior epistaxis and may need ESPAL (Endoscopic Sphenopalatine Artery Ligation).

One thought on “Maxillary Artery Mnemonic

Add Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.