Blood Supply To Brani Flashcards
Importance of arterial blood supply to the brain
Needs a continuous supply of oxygenated blood and glucose as a primary energy source
Lobes of the cerebral cortex
Parietal, frontal, occipital, temporal
Subcortical structures of the brain
Diencephalon - thalamic masses and basal ganglia
Mesencephalon
Pons
Medulla
Cerebellum
5 branches of aortic blood supply
Aortic root (supplies blood to heart)
Ascending aorta
Arch of aorta
Descending aorta
Abdominal aorta
3 branches of the apex of the aortic arch
Braciocephalic trunk/artery
Left common carotid
Left subclavian
What does the brachiocephalic artery divide into?
Right subclavian artery
Right common carotid artery
Where does the brachiocephalic artery bifurcate?
Level of the sternoclavicular articulation
What do the common carotid arteries supply?
Right supplies the right side of neck and right anterior cerebral circulation
Left supplies the left side of neck and left side of cerebral circulation
What level does the arch of the aorta sit?
T4/T5 discs at the sternal angle of Louis
When does bifurcation of the common carotid occur?
Superior part of thyroid cartilage, roughly c3/4 vertebral levels
What does internal carotid supply?
No branches in the neck, branches constitute the anterior cerebral circulation
How do distinguish internal and external carotid
Internal has a dilation at the start (carotid sinus) and has no branches in the neck
What does the external carotid artery supply?
Neck, face, scalp, mouth and jaw tissues
What are the branches of the external carotid artery?
SALFOPMS - some anatomists like freaking out poor medical students
Superior thyroid, ascending pharyngeal, lingual, facial, occipital, posterior auricular, maxillary, superficial temporal
Last 2 are terminal branches
4 segments of the ICA
Cervical, petrous, cavernous, cerebral
What else does the ICA carry with it?
Sympathetic supply to the head region