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Flashcards in Blood Vessels and Lymphatics Deck (43)
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0

Inferior thyroid artery supplies blood to the_______ and has a close relationship with_______

thyroid gland
recurrent laryngeal nerve

1

R common carotid and R subclavian vein come off the _____

brachiocephalic trunk (artery)

2

L common carotid and L subclavian come off the _______

aorta

3

Structures posterior to anterior scalene (2)

subclavian a
brachial plexus

4

Structures anterior to anterior scalene (2)

subclavian vein
phrenic nerve

5

The three parts of subclavian a are divided by

anterior scalene m.

6

First branch off subclavian a

vertebral a

7

Vertebral artery courses through _______ and merges to form the ______

CV 6-1
basilar artery

8

Vertebral artery supplies ____% of blood to the brain and is responsible for the _______circulation

20
posterior

9

Subclavian Steal Syndrome

due to obstruction of the subclavian a, proximal to the vertebral a
EPISODIC increase in peripheral circulatory demand in associated extremity
due to physical work/exercise
SHUNTING of blood from the vertebro-basilar circulation into distal subclavian a.
can cause vertebrobasilar insufficiency

10

Vertebro-basilar insufficiency

decrease in blood flow to the brain
may result in coma, quadriplegia, numerous cranial abnormalities
(dizziness, CN dysfunction, paralysis, loss of consciousness)
type of ischemia
an episode may result in transient or permanent neurological damage

11

Second branch off subclavian a

Thyrocervical trunk
branching is variable

12

what important branch off thyrocervical trunk runs with an important nerve?

inferior thyroid artery running with recurrent laryngeal nerve

13

Inferior thyroid a gives off what branches

ascending cervical artery
inferior laryngeal artery

14

The recurrent laryngeal nerve enters the larynx with what artery

inferior laryngeal artery

15

Does the internal carotid artery have branches in the neck

no

16

The internal carotid artery supplies the brain via the _____ portion of the circle of willis

anterior

17

The internal carotid gives off its first branch________ and then (in the cranial vault) bifurcates into

ophthalmic a
anterior cerebral a
middle cerebral a

18

the ICA supplies _____% of blood to the brain via the circle of willis

80

19

The Circle of Willis is

asymmetrical and incomplete

20

Changes in cerebral blood are ________ to a degree

autoregulated
significant shunting of blood from on region of circulation to another may result in hyperperfusion and edema

input must =output

21

cerebral arteries are ____ arteries, each with their own _____

end
territory

22

Three important branches of external carotid a

Superior thyroid a
superficial temporal a
maxillary a.

23

first branch of External carotid a

Superior thyroid a (blood supply to the thyroid)

24

major branch of superior thyroid artery

superior laryngeal artery, which pierces the thyrohyoid membrane along with internal laryngeal n

25

The two terminal branches of external carotid artery are

superficial temporal artery
maxillary artery

26

important branch of the first part of maxillary artery

middle meningeal artery

27

terminal branch of maxillary artery

sphenopalatine artery

28

sphenopalatine artery supplies

it is major arterial supply to the posterior 2/3 of the nasal cavity
(posteriolateral wall of nasal cavity, and nasal septum)

29

veins from face and neck will eventually go into

IJV or brachocephalic vein