Arterial supply and venous drainage Flashcards
Why is this important?
Blood vessels in the head and neck…
- May become compromised during dental procedures
- May spread odontogenic infections
- May spread cancerous cells from a tumour
What two major arteries supply the head and neck?
- Common carotid artery
- Subclavian artery
How do the right and left sides leaving the heart differ?
- Left side arises directly from aorta
- Right side brachiocephalic artery from aorta and then divides into CCA and SCA
Where is the CCA located?
Deep to the sternocleidomastoid muscle
What does the CCA divide into? (and where)
The internal carotid artery and the external carotid artery
(at the level of the upper border of the thyroid cartilage)
What travels in the carotid sheath?
common carotid artery, internal carotid artery, jugular vein, vagus nerve
Where does the internal carotid artery enter the skull?
The carotid canal
What does the internal carotid artery supply?
- intracranial structures
- eye, orbit, lacrimal gland
Where does the external carotid artery travel?
medial to ICA
What does the ECA supply?
extra-cranial tissues of head and neck
What are the four sets of branches of the ECA?
- Anterior
- Medial
- Posterior
- Terminal
What are the anterior branches of the ECA?
- Superior thyroid artery
- lingual artery
- facial artery
What does the lingual artery supply?
- tongue (goes through)
- floor of mouth
- lingual gingivae and alveolar mucosa
What does the facial artery supply?
Face
-oral
-buccal
-nasal
-infraorbital
-orbital regions
What does the ascending pharyngeal artery supply?
- pharyngeal walls
- soft palate
- meninges of the brain
- tonsils
What does the posterior auricular artery supply?
- internal ear
- mastoid air cells
what does the occipital artery supply?
- SCM muscle, meningeal tissues
What does the maxillary artery supply?
- all of teeth and gingiva
- muscles of mastication
- teeth and nose
Where does the maxillary artery begin?
The neck of the mandibular condyle
- within parotid gland
Where does the maxillary artery pass through?
The mental foramen
What artery supplies the maxillary posterior teeth?
Posterior superior alveolar artery- dental branches
What artery supplies the maxillary premolar teeth?
The middle superior alveolar artery
What artery supplies the maxillary anterior teeth?
Anterior superior alveolar artery
What artery supplies the palatine mucosa, hard palate, and palatal periodontium
The greater palatine artery
What artery supplies the palatine mucosa, hard palate, and palatal periodontium?
The nasopalatine artery
What artery supplies the mandibular posterior teeth?
The inferior alveolar artery
What artery supplies the mandibular anterior teeth?
The Incisive artery
What artery supplies the chin area?
The mental artery
What artery supplies the lingual periodontium and gingiva of the mandibular teeth?
Sublingual of lingual artery/submental of facial artery
What are the 3 most important pairs of veins
- External jugular vein
- Internal jugular vein
- vertebral vein
What does the external jugular vein drain?
superficial head structures (scalp and face)
What does the internal jugular vein drain?
bulk of brain and face region
What veins join to form the retromandibular vein?
Superficial temporal and maxillary
What does the retromandibular vein divide into?
- Anterior part joins facial vein
- posterior part forms the external jugular vein
