arteries of head and neck Flashcards
what are the main arteries of head and neck?
left and right common carotid
which of the 2 carotid arteries has no branches?
internal carotid
where does the internal carotid enter the skull?
through the carotid canal in the temporal bone to supply blood to brain
which of the 2 carotid arteries has branches?
external carotid has 8 branches
what is the main source of blood to the structures of neck, face and scalp?
external carotid artery
what are the 8 branches of the external carotid artery?
Superior Thyroid Lingual Ascending Pharyngeal Facial Occipital Posterior auricular Superficial temporal Maxillary
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what are the 2 terminal branches of the external carotid?
superficial temporal
maxillary
what is the carotid sinus?
slight dilation of the internal carotid where it joins the common carotid and acts as a baroreceptor.
what is the carotid sinus innervated by?
carotid sinus nerve, branch of glossopharyngeal CN IX
what is the carotid body?
small reddish-brown mass located within or deep to the bifurcation of common carotid
what does the carotid body do?
a chemoreceptor which detects change in chemical make up of blood
what is the largest vein in the neck and where does it run?
internal jugular vein and it runs from the jugular foramen and drains into the brachiocephalic vein
what is the superior jugular bulb?
dilation of internal jugular vein that contains a valve to prevent blood rushing through and pooling
what are the 6 tributaries of the internal jugular vein?
Inferior petrosal sinus Lingual vein Facial vein Middle thyroid vein Superior thyroid vein Pharyngeal veins
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