Parotid Flashcards
How do the salivary glands break down carbohydrates?
Salivary amylase (formerly known as ptyalin)
What muscle connects the parotid duct and the parotid salivary gland?
Masseter
What muscle lies under the sublingual salivary gland?
Mylohyoid
What lies under the mucosa in the mouth?
Sublingual ducts
What lies under the sublingual ducts?
Submandibular duct
What lies under the submandibular duct?
Sublingual salivary gland
What connects to the mylohyoid muscle from the back?
Submandibular salivary gland
What type of morphology is involved with the bilateral parotids?
Lobular and irregular
How is the parotid divided?
Deep and superficial lobes
What are the parotids separated by?
Facial nerve
How is the deep hollow parotid region bordered by?
Superiorly by the zygomatic arch, inferior border of the mandible, anteriorly by the masseter muscle near the second upper molar
How is the deep hollow parotid region bordered by?
Superiorly by the zygomatic arch, inferior border of the mandible, anteriorly by the masseter muscle near the second upper molar, posteriorly by external ear/sternocleidomastoid
How are the secretions of the parotid gland transported to the oral cavity?
Stensen duct
Where does the Stensen duct arise?
Anterior surface of the gland and traverses the masseter muscle
Where does the Stensen duct end?
The duct pierces the buccinator and moves medially and opens out into the oral cavity
What neurovascular structures pass through the parotid?
Facial nerve, ECA, and retromandibular vein
What’s another term for the facial nerve?
Cranial nerve VII
What does the facial nerve give rise to?
5 terminal branches in the parotid gland which innervate the muscles of facial expression
What does the ECA give rise to as it ascends through the parotid?
Posterior auricular artery
What are the 2 terminal branches the ECA divides into (after the posterior auricular artery)?
Maxillary artery and superficial temporal artery
How is the retromandibular vein formed within the parotid?
The convergence of superficial temporal and maxillary veins (a major structure responsible for venous drainage of the face)
Which frequency transducer do you use for parotid?
Highest possible (5-12 MHz wide-band linear/median frequency
Which frequency transducer do you use for parotid?
Highest possible (5-12 MHz wide-band linear/median frequency 7-7.5 MHz or more)
What planes are used in scanning?
Transverse and coronal
