Blood Supply 1 Flashcards
It enters the orbit through the optic canal with the optic nerve
Opthalmic artery
Common carotipd artery divides into
External carotid artery
Internal carotid artery
Carotid sheath wt vagus and internal jugular vein
Common carotid artery
Supplies structures in the neck, face, scalp, tongue and maxilla
External carotid artery
Terminates at the substance of parotid gland behind the neck of the mandible
External carotid artery
Lies in the carotid triangle
External carotid artery
Medial to the internal carotid artery then crosses the post belly of the digastric and stylohyoid
External carotid artery
The external carotid artery is ——— to the internal carotid artery
Medial
The external carotid artery crosses what structures?
The post belly of the digastric and the stylohyoid
Branches
SALFOPSM
Superior thyroid artery Ascending pharyngeal artery Lingual artery Facial artery Occipital artery Post auricular artery Superficial temporal artery Maxillary artery
Upper pole of the thyroid gland
Superior thyroid artery
Branches of the superior thyroid artery
- To the sternocleidomastoid
2. Superior laryngeal artery
Pharynx
Ascending pharyngeal artery
Tongue
Lingual artery
Face
Facial artery
Found at the back of the scalp
Occipital artery
The occipital artery is accompanied by
The greater occipital nerve
Auris = ear
Behind the ear
Post auricular artery
Supplies the skin over the temporal and frontal regions of the scalp
Superfical temporal artery
The internal maxillary artery branches in the infratemporal fossa
- Inferior alveolar artery
- Middle meningeal artery
- External auditory meatus & tympanic membrane
- Small branches to mastication muscles
Branches of the internal maxillary artery in the pterygopalatine fossa
Accompanies branches of maxillary nerve
- meningeal
- ganglionic
- post superior alveolar
- zygomatic
- middle sup alveolar
- ant superior alveolar
Supplies the brain, eyes, forehead, and part of the nose
Internal carotid artery
Lies in carotid sheath; no branches in the neck
Internal carotid artery
Receives blood from the brain, face and neck
Internal jugular vein
Begins at the jugular foramen as a continuation of sigmoid sinus
Internal jugular vein
The internal jugular vein begins at the ————- as a continuation of the ————-
Jugular foramen, sigmoid sinus
Unites with subclavian vein behind the medial border of clavicle
Internal jugular vein
Has a superior and inferior bulb
Internal jugular vein
A branch of the internal carotid artery after that vessel emerges from the cavernous sinus
Opthlamic artery
Tributaries of the IJV
Inferior petrosal sinus Facial vein Pharyngeal sinus Sup thyroid vein Middle thyroid vein Occipital vein (post auricular/ vertebral vein)
Joins the IJV at the sup bulb; assists in draining the cavernous sinus
Inferior petrosal sinus
Joins the ant division of the retromandibular vein
Facial vein
Pharyngeal venous plexus
Pharyngeal veins
Tributaries of the Internal Jugular Vein
Inferior Petrosal Sinus Facial Vein Pharyngeal Vein Superior Thyroid Vein Middle Thyroid Vein Occipital Vein
Tibutaries of the External Jugular Vein
Post Auricular Post Division of Retromandibular Post Ext Jug Transverse Cervical Suprascapular Ant Jug
Branches of the subclavian artery (1st part)
Vertebral A. Thyrocervical Trunk - inf thyroid a. - transverse cervical a. - suprascapular Internal Thoracic A.
The subclavian artery is divided into 3 parts by what muscle?
Scalene anterior
Branches of the subclavian artery (2nd part)
Costocervical trunk
- deep cervical a. - supreme intercostal a.
Branches of the subclavian artery (3rd part)
Dorsal scapular
Upper margin of subclavian artery
Vertebral artery
Enters the foramen magnum
Vertebral artery
The vertebral artery enters the foramen of the transverse process of the ___________ vertebra.
Upper 6 vertebra
Joins together to form th basilar artery
Vertebral artery
Cranial branches of the Vertebral artery
Meningeal arteries
Ant & post spinal arteries
PICA
Medullary arteries
Branches of the thyrocervical trunk
Inf thyroid a.
Superficial cervial artery/ transverse cervical
Suprascapular a.
Located in front of the first part of the subclavian artery
Thyrocervical trunk
Located at the lower border of the first part of the subclavian artery; enters the thorax by descending the first costal cartilage
Internal thoracic a.
Branches of the Costocervical trunk
Sup ( & post) intercostal artery/ies
Deep cervical artery (back and neck)
Venous drainage of the scalp wil be via the ___________
Vena comitantes
Arterial supply of the Scalp
Supratrochlear/orbital ( branches of the ophth a.)
Superficial temporal a.
Post auricular artery
Occipital artery
Veins of th scalp are connected to the _______________ of the skull & ______________________ via the ________________________.
Diploic veins of the skull
Intracranial venous sinuses
Valveless emissary veins
Venous drainage of the scalp
Supratrochlear/ orbital v.
Superficial temporal v.
Post auricular v.
Occipital v.
Unites at the medial margin of to form the facial vein
Supratrocholear & supraorbital veins
The superfical temporal vein unites with the maxillary vein to form ______?
The retromandibular vein
Unites with the post division of retromandibular to form the EJV
Post auricular vein
Drains in the suboccipital venous plexus
Occipital vein
Arterial supply of the face
Facial artery
- submental artery - inf labial artery - sup labial artery - lateral nasal artery
Branches of the facial artery
Submental artery
Inf labial artery
Sup labial artery
Lateral nasal artery
Located in the skin of the chin and lower lip
Submental artery
Locatd in the superior lip and septum and ala of the nose
Sup labial artery
Located in the skin on the dorsum of the side of the nose
Lateral nasal artery
Arteries to the brain
Caroticotympanic artery
Ophthalmic artery
Segments of the internal carotid artery
Cervical segment. C1 Petrous segment. C2 Lacerum segment. C3 Cavernous segment. C4 Clinoid segment. C5 Opthalmic/ supraclinoid segment. C6 Communicating/ terminal segment. C7
This segment comprises the cervical portion
C1
Cervical segment
Comprises the petrous portion
C2 & C3
Petrous, lacerum segment
Cavernous portion
C4
Segment not identified in some earlier classifications; lies bet the cavernous portion and th cerebral or supraclinoid portion
Clinoid segment
C5
Comprise the cerebral/ supraclinoid portion
C6 & C7
Opthalmic/ supraclinoid segment
Communicating/ terminal segment
Usually the largest vein in the neck
IJV
The course of the IJV corresponds to a line drawn from a point immediately inf to the ________________ to the medial end of the _________.
External acoustic meatus
Clavicle
Where does the IJV commence?
At the jugular foramen in the post cranial fossa, as the direct cont of th sigmoid sinus
The dilation at the origin of the IJV is called….
The superior bulb of the IJV
The its superioir bulb the IJV runs inferiorly in the neck in the ________.
Carotid sheath
The IJV leavs the ant triangle of the neck by passing deep to the _____________.
SCM muscle
Post to the sternal end of the clavicle, the IJV unites with the _____________ to form the ______________.
Subclavian vein
Brachiocephalic vein
Carotid sheath
Common carotid
Vagus nerve
Deep cervical lymph nodes
Danger zone/ triangle
Internal carotid artery
Supplies the structures of the head and neck
Ext carotid artery
Supplies the brain
Internal carotid artery
Seen in hypertensives; transient blindness; nawawalan ng caliber yung arteries = low blood supply
Amaurosis fugax
Stab wounds in the neck might cause
Embolism
Decempression sickness
Caissons disease
Other arterial supply of the face
Superfical temporal artery - scalp
Transverse facial artery - branch of the superficial temp; cheeks
Supraorb/troch - in the skin of the forehead
Artery most commonly damaged in head injuries
Middle meningeal artery
Results from injuries to the meningeal arteries or veins
Extradural hemorrhage
Most common artery damaged in extradural hemorrhage
Ant division of the middle meningeal artery
Results from tearing of the superior cerebral veins at their point of entrance into the superior sagittal sinus
Subdural hemorrhage
Minor blow to the side of the head, resulting in fracture of the skull in the region of the anteroinf portion of the parietal bone
Extradural hge
Usu a blow on the front or back of the head, causing excessive anteropost disp of the brain in the skull
Subdural hge
Results from leakage or rupture of a congenital aneurysm on the circle of willis, or from an angioma
Subarachnoid hge
Diagnosis of subarachnoid hge
Wtdrawing heavily blood stained CSF thru a lumbar puncture
Generally caused by rupture of the thin walled lenticulostriate artery, a branch of the middle cerebral artery
Cerebral hemorrhage
The IJV unites with the _________ behind the ___________________.
Subclavian vein,
Medial border of the clavicle
Enters the skull through the foramen spinosum
Middle meningeal artery