Area under SCM (BUCK) Flashcards
what are the 5 main contents of the carotid sheath
common and internal carotid internal jugular vein vagus nerve ansa cervicalis (superior root) deep cervical lymph nodes
what are the 5 main contents of the carotid sheath
common and internal carotid internal jugular vein vagus nerve ansa cervicalis (superior root) deep cervical lymph nodes
within the sheath where does the main artery lie in relation to the vein
artery- medial and anterior
vein is lateral and somewhat posterior
where does the vagus nerve sit in the carotid sheath
sits between the two vessels in the posterior groove
where do the deep cervical lymph nodes lie in the sheath
form a change along the internal jugular vein and may be embedded within the sheath
what is the difference b/w left and right common carotid arteries
left comes off aorta
right comes off brachiocephalic
where does the common carotid extend to and then branch
to superior horn of thyroid cartilage opposite CV3
what does the carotid sinus control
blood pressure
increase in pressure –> decrease HR
what does the carotid body control
located at carotid bifurcation
chemoreceptor–> decrease in O2–> increase rate and depth of respiration
where does the internal carotid artery travel in the neck
within the carotid sheath
enters carotid canal in the skull
no branches in the neck
what are the branches of the external carotid artery
Sallie- Superior thyroid artery Anne - ascending pharyngeal Likes- Lingual Flirting- facial On - occipital Philadelphia's - posterior auricular Main- maxillary streets- superficial temporal
where does the external carotid give off its first four branches
in the carotid triangle
where does the external carotid give off its 5th and 6th branches (occipital and posterior auricular)
where it is crossed laterally by the posterior belly of the digastric and stylohyoid muscle
what nerve crosses the external carotid near the point of origin of the occipital artery
hypoglossal nerve that is passing through the carotid sheath en route to the tongue
what is the first branch off the external carotid and what are its main branches
superior thryoid artery has three branches: superior laryngeal anterior branch posterior branch
what are the 4 branches off the ascending pharyngeal
pharyngeal
palatine
inferior tympanic
meningeal a
what are the 3 branches off the lingual artery
dorsal lingual
deep lingual
sublingual
what are the 5 branches off the facial artery
tonsillar ascending palatine glandular artery muscular submental
what nerve does the occipital artyer follow
greater occipital nerve
what are the 5 branches of the occipital artery
sternocleidomastoid meningeal auricular mastoid descending branch (to deep neck)
which nerve crosses the occipital artery at its origin from the external carotid
hypoglossal (CNXII)
