Lesson 1 C Flashcards
The first important branches of the ascending aorta
Coronary arteries
Most common variant of branches and in what percent of population
22%
left common carotid and brachiocephalic have common origin
The second most common and the %
Left vertebral artery arising directly from the arch
4-8%
Least common normal variant
Common origin of both the common carotid arteries
What happens with double aortic arch
The left ascending aorta goes to the left and wraps around the esophagus and connects the right descening aorta.
There are no brachiocephalic arteries, the subclavian and cca branch right off
The vertebral arteries branch directly off of the
Subclavian
The subclavian artery giver rise to what two other mafor branches
Internal mammary artery
Thyrocervical trunk
The subclavian artery becomes the axillary artery where
After the 1st rib
The axillary artery becomes _____ as it exits the axilla and extends to the elbow
Brachial
The brachial artery gives off another branch called
Deep brachial artery
The brachial artery seperates into what 3 branchs
Ulnar, radial and interosseous
Early division of the brachial artery seen in what.% of pop
19%
The radial and ulnar arteries communicate with each other via
Single dorsal arch
The deep palmar arch is more _______ than the superficial palmar arch
Proximal
The superficial arch is most dominant and gives rise to the
Common digital arteries
The common digital arteries give rise to _______ which ____
Proper digital arteries
Which course down either side of the fingers
The brain receives its blood supply from what 4 blood vessels
The paired internal carotid and vertebral arteries
Where do the brain arteries enter the brain
At the base of the skull
At the upper border of the thyroid cartilage what happens to the CCA
Widens into the bulb and then bifurcates into the internal carotid artery and the external artery
The bulb is continuous with what?
ICA — > considered its proximal portion
ICA supplys the ____ with blood
Brain
ECA supplies ____ and ____ with blood
Neck and face
ICA is a ____ artery and CCA is an ______ artery
ICA=muscular
ECA= elastic
Which is bigger ICA or ECA
ICA
What is the flow divider
The junction of the ICA and ECA
The divider is the location of what
The carotid body and nerve complex of the carotid sinus
The ICA has no
Extracranial branches
The ECA branches early after the bifurcation and gives rise to
Superior thyroid artery
Single most important means of differentiating ICA and ECA
Identifying branches of ECA
Which is more medial ECA or ICA
ECA
The ECA has a highly resistive flow pattern as a result of
Distal vascular bed that it suplies
