vitale 8 Flashcards
(24 cards)
which one between internal and external carotid arteries has branches in the neck?
external carotid artery
where is the carotid canal located?
into the pyramidal portion of the temporal bone
what is the tubercle used as a position of reference to hear the pulse of the common carotid artery?
tubercle of chassaignac, carotid tubercle of C6
Left and right vertebral artery anastomose into?
Basilar artery/trunk
that goes into the cranium with the spinal cord through the foramen magnum
which parts of the brain do the vertebral arteries vascularize?
-cerebellum
-brain stem
-occipital lobes of the hemisphere
communication of internal and external carotid circulation
at the medial angle of the eye, one terminal branch of the ophthalmic artery (branch of internal carotid) anastomose with the facial artery (branch of external carotid)
sphenopalatine fossa between?
the posterior aspect of the maxillary bone and the medial and lateral pterygoid processes of the sphenoid bone
maxilalry artery is divided in 3 portions
- mandibular portion
- pterygoid portion
- pterygopalatine portion
mandibular portion of maxillary artery branches
anterior tympanic arteries
mid meningeal artery
inferior alveolar artery
pterygoid portion of maxillary artery branches
pterygoid, masseteric, posterior deep temporal, anterior deep temporal, buccinator arteries
pterygopalatine portion branches
posterior superior alveolar artery
infraorbital artery
Sphenopalatine artery
Descending palatine artery
where do the 2 brachiocephalic veins drain?
into the superior vena cava
each brachiocephalic trunk originate at the conjunction of which veins?
internal jugular vein and subclavian vein
which brachiocephalic vein between right and left is more vertical and shorter?
the right one, they converge into the superior vena cava that is on the right side
the carotid sheet covers
-inernal jugular vein
-vagus nerve (cranial nerve 10)
-carotid artery
either internal if we look above the bifurcation
or common if below the bifurcation
what’s the name of the fossa from which originates the internal jugular vein?
jugular foramen between the temporal and the occipital bone
in the anterior portion of the jugular foramen there are 3 nerves
glossopharyngeal (cranial nerve 9) vagus nerve (cranial nerve 10) accessory nerve (cranial nerve 11)
the venus blood in the brain is collected by?
the dura mater venous sinuses
drain into eachother until they drain into 2 transverse sinuses (in the posterior cranial fossa)
the transverse sinuses then reach the jugular fossa and become right-left internal jugular veins
thyroid veins, drained by?
superior and middle by the internal jugular vein
inferior directly goes into the brachiocephalic trunk
internal carotid artery has the carotid sinus, why?
has baroreceptors in the wall to check for the blood pressure
they are present as a checkpoint for blood pressure before going into the intracranial circulation
it gets activated when the blood pressure decreases
carotid globus/body
attached to the carotid sinus
it has chemoreceptors: checkpoint for hemoglobin saturation
is not in the wall of the artery, is outside
its vascularized by a little artery coming from the carotid
-activated when the conc of oxygen decreases
what can you see anteriorly and posteriorly of the anterior scalene tendon?
anteriorly you can see the subclavian vein
posteriorly the subclavian artery
branches of the thyrocervical trunk
-inferior thyroid artery
-transverse cervical artery
Suprascapular artery
