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BOB TOPIC 5 - Angeline Ardythe Katarina Rajagukguk - 2506553534 - Coggle…
BOB TOPIC 5 - Angeline Ardythe Katarina Rajagukguk - 2506553534
Branching & blood vessels affecting OCF regions/organs
Main sources
External carotid artery (ECA)
Internal carotid artery (ICA)
ECA branches (OCF supply)
Facial artery → lips, nose, cheeks
Lingual artery → tongue, FOM
Maxillary artery → teeth, palate, nasal cavity
Superficial temporal → scalp
Occipital → posterior scalp
Posterior auricular → ear
Superior thyroid, ascending pharyngeal
ICA
Supplies brain, orbit
Veins
External jugular, internal jugular
Facial vein
Pterygoid venous plexus
Nomenclature in the vascularization system
Based on direction
Artery = away from heart
Vein = toward heart
Based on location
Anterior/posterior, dextra/sinistra, externa/interna
Supra/infra, superficial/deep, medial/lateral
Based on function
Artery → arterioles → capillaries → venules → veins
Based on shape/traits
Longus, brevis, magnus, minor, rectus, obliquus, circumflexus
Vessel layers
Intima, media, adventitia
Branching & vessels affecting oral region (tongue, teeth, gingiva, mucosa)
Lingual artery
Dorsal lingual → posterior tongue, tonsil
Sublingual → sublingual gland, FOM, gingiva
Deep lingual → anterior tongue
Maxillary artery
Inferior alveolar → mandibular teeth
Mental → lower lip, chin
PSA → maxillary molars
Infraorbital + superior alveolar branches → maxillary anterior teeth
Greater/lesser palatine → hard/soft palate
Sphenopalatine → nasal septum
Microvascular plexuses
Labial, palatine, alveolar, sublingual branches → capillary beds under oral mucosa
Venous drainage
Lingual vein → tongue
Facial vein → lips, vestibule
Pterygoid plexus → deep teeth/alveolar regions
Microscopic structure & function of lymphatic system
Microscopic structure
Lymphatic capillaries → simple endothelium, no basement membrane
Larger vessels → valves + tunica intima / media / adventitia
Lymph nodes → capsule, cortex/medulla, immune cells
HEVs → allow lymphocyte entry
Functions
Fluid balance → returns interstitial fluid
Immune defense → filters pathogens, activates lymphocytes
Fat absorption → lacteals absorb lipids → chyle → bloodstream
Vascular plexus in OCF
Basilar plexus
On clivus
Connects inferior petrosal sinuses
Basilar plexus
Nasal septum (Little’s area)
Anastomosis of anterior ethmoidal, posterior ethmoidal, sphenopalatine, greater palatine, superior labial
Pterygoid plexus
In infratemporal fossa
Between medial pterygoid, lateral pterygoid, temporalis
Drains deep face, teeth, nasal cavity
Connects to cavernous sinus, facial vein
Pharyngeal plexus
On outer pharynx
Drains → internal jugular, pterygoid plexus, facial vein