Craniofacial Vasculature II Flashcards
What delineates the 1st, 2nd, and 3rd parts of the Subclavian A.?
1st - medial to anterior scalene m.
2nd - behind anterior scalene m.
3rd - lateral border of anterior scalene m. to the first rib.
What are the branches of the thyrocervical trunk?
Inferior thryoid a.
Ascending cervical a.
Suprascapular a.
Transverse cervical a.
What are the branches of the costocervical trunk?
Supreme intercostal a.
Deep cervical a.
What artery comes off distal to the costocervical trunk?
Dorsal scapular a.
Branches of external carotid a.
Superior thyroid a. --> superior laryngeal a. Ascending pharyngeal a. Lingual a. Facial a. Occipital a. Posterior auricular a. Superficial temporal a. Maxillary a.
Branches of superior thyroid a. (3)
Superior laryngeal a.
Infrahyoid a.
Sternocleidomastoid branch
What 2 muscles does the lingual a. go beneath?
What nerve does it cross?
What muscle does it run deep to?
Goes beneath digastric m. and stylohyoid m.
Crosses CN XII.
Hypoglossus m.
2 terminal branches of the lingual a.:
Sublingual a.
Deep lingual a.
Cervical branches of the facial a. (4)
Ascending palatine a.
Tonsilar branch
Submental a.
Glandular branch
Facial branches of the facial a. (4)
Inferior labial a.
Superior labial a.
Lateral nasal branch
Angular a.
What nerve does occipital a. run with?
Greater occipital n.
What structures is the posterior auricular a. associated with as it ascends?
Goes beneath parotid gland and between ear and mastoid process.
Branches of the posterior auricular a. (5)
Stylomastoid a. Posterior tympanic a. Auricular branch Occipital branch Parotid branch
3 parts of maxillary a.
I - mandibular part
II - pterygoid part
III - pterygopalatine part
Branches of mandibular part of maxillary a. (5)
Deep auricular a. Anterior tympanic a. Inferior alveolar a. --> mylohyoid a. and mental a. Middle meningeal a. Accessory meningeal a.
What foramen does inferior alveolar a. enter?
What does it supply?
Mandibular foramen.
Supplies mandible, mandibular teethe, chin and mylohyoid m.
What does middle meningeal a. supply?
Dura of lateral wall Trigeminal ganglion CN VII Tympanic cavity Tensor tempani m.
What foramen does accessory meningeal a. enter?
What does it supply?
Foramen ovale.
Supplies extracranial ms. of infratemporal fossa, otic ganglion and sphenoid bone.
Branches of pterygoid part of maxillary a. and what do they supply?
Deep temporal a. - temporalis m.
Pterygoid branches - pterygoid m.
Masseteric a. - TMJ and masseter m.
Buccal a. - buccinator m.
Branches of pterygopalatine a. (6)
Posterior superior alveolar a. Infraorbital a. A. of pterygoid canal Pharyngeal branch Descending palatine a. (greater and lesser palatine as.) Sphenopalatine a.
What does posterior superior alveolar a. supply?
Maxillary molar and premolar teeth.
What does the infraorbital a. travel through?
What does it supply?
Inferior orbital fissure.
Some eye muscles, lacrimal sac, maxillary canines, incisors and skin of infraorbital region of face.
What does the A. of pterygoid canal supply?
Mucosa of upper pharynx, pharyngotympanic tube and tympanic cavity.
What does the greater and lesser palatine as. supply?
Greater - hard palate
Lesser - soft palate, palatine tonsils.
What does sphenopalatine a. supply?
Nasal septum and all sinuses.
Branches of superficial temporal a. (5)
Transverse facial a. Middle temporal a. Anterior auricular a. Frontal a. Parietal a.
Vertebrobasilar insufficiency is:
Sx:
Decreased posterior circulation due to intermittent vertebral a. occlusion.
Sx: syncope, dizziness, vertigo, double vision, slurred speech, nausea, vomiting, etc.
Subclavian steal syndrome
Proximal stenosis/occlusion of subclavian a.
Causes reverse flow thru vertebral as. to reach UE.
Decreased BF to brain.
