5. Great Vessels of the Neck & Azygous Venous System Flashcards
Which 4 arteries arise from the arch of the aorta? (4)
- The left common carotid, left subclavian.
- The brachiocephalic trunk gives rise to the RCA and RSA.
At what vertebral level do the left/right carotid arteries bifurcate?
- C4 (to form the ECA and ICA).
Where is the carotid sinus located?
Which artery is related to?
- At the level of C4, just before the common carotids bifurcate to form the ICA and ECA.
Related to the ICA.
What is the function of the carotid sinus?
Which nerve innervates it?
- It contains baroreceptors sensitive to changes in arterial pressure. They play a role in BP and HR.
- innervated by the glossopharyngeal nerve.
What is a carotid endarterectomy?
- objective to remove plaque build up in the carotid artery.
- artery is opened and the plaque is removed.
Name the 7 main branches of the ECA.
- Superficial temporal.
- Maxillary.
- Facial.
- Ascending pharyngeal.
- Lingual.
- Occipital.
- Superior thyroid.
- Posterior auricular.
Which arteries do the left and right subclavian arteries give rise to?
- left and right thyrocervical trunks.
- left and right vertebral arteries.
Which areas does the EJV drain?
- most of the face and scalp.
Which areas does the AJV drain?
- anterior neck.
Which areas does the IJV drain?
- brain, anterior face, cervical viscera and deep muscles of the neck.
What is the venous angle?
- the point where the IJV joins the subclavian vein.
What is the IJV a continuation of?
- the sigmoid sinus.
How is the brachiocephalic vein formed?
- joining of the IJV and subclavian vein.
Describe the inferior bulb of the IJV.
- contains a oneway bicuspid valve.
Where does the subclavian vein begin?
- lateral border of the first rib.
