Vascular Supply

Question 0

How much of circulating blood does the Brian receive

Answer 0

20-25%

Question 1

Brain small organ but

Answer 1

Over 10 billion neurons, weighs 3pounds

Comprises 2%of body mass overall

Question 2

He much oxygen does it use

Answer 2

25 percent

Question 3

Brain is completly dependent on blood supply

Answer 3

As there are no reserves

Question 4

Lose consciousness after how long if no blood

Answer 4

10 seconds

Question 5

Permanent brain damage after how long

Answer 5

2-3 minutes

Question 6

Things that can disrupt vascular system

Answer 6

Clots
Narrowing of arteries 
Elevated blood pressure 
Brain swell downward 
Also need vascular supply as well

Question 7

Hypoxia

Answer 7

Lack of oxygen

Question 8

Complete loss if oxygen

Answer 8

Anoxia

Question 9

Path of blood supply

Answer 9

From heart to internal carotid arteries to circle of Willis

Question 10

Where do heart muscles pump oxygenated blood

Answer 10

Into the aorta

Question 11

Where does aorta send blood

Answer 11

To subclavian arteries (l and r)

Question 12

Where does common carotid artery (l and r) arise from

Answer 12

From l and r subclavians

Question 13

Where does common carotid artery l and r travel

Answer 13

Upward into the neck and subdivide again around the jaw

Question 14

What does common carotid artery divide into

Answer 14

Internal and external carotid arteries (l and r)

Move in and thru the skull to the brain where it gets to the c of w

Question 15

What do the external carotid arteries )l and r) serve

Answer 15

Outer surface of face

Question 16

What do internal carotid arteries (land r) serve

Answer 16

The brain, they travel along the neck, upward, just behind the jaw

Question 17

Where do internal carotid argues eventually merge

Answer 17

At the c of w

At the base if the brain, ready to beach into kore cerebral arteries

Question 18

Where does blood move

Answer 18

From heart mover superiorly

Question 19

Internal- c of w

Answer 19

Mainly provide for ant cerebral artery and middle cerebral artery

Question 20

Pairs of cerebral artery

Answer 20

Ant pair, middle pair, post pair

Question 21

Carotids =

Answer 21

Anterior and lateral

Question 22

Path of blood

Answer 22

From heart to vertebral arteries to basilar to c of w

Question 23

Heart muscles pump oxygenated blood into the

Answer 23

Aorta

Question 24

Aorta sends blood to

Answer 24

Two subclavian arteries (l and r)

Question 25

Subclavians branch into

Answer 25

Vertebral arteries (l and r)

Question 26

Vertebral arteries travel upward along each side of the

Answer 26

Brainstem

Question 27

Where do vertebral arteries join together

Answer 27

At the top of the brainstem (base of skull)

Question 28

Once at brainstem vertebral arteries form 1 artery called

Answer 28

Basilar artery

Question 29

Basilar artery

Answer 29

Supply posterior cerebral artery (pair) and cerebellar arteries (further back, branch off a little before c of w)

Question 30

Basilar artery eventually merged at the c of w along with

Answer 30

Other Arteries ( from the internal carotid arteries (l and r))

Question 31

Vertebrals path

Answer 31

Wind around and come up base of spinal cord- move superiorly along cervical verterbraes

Question 32

Vertebrals= basilar =

Answer 32

Posterior

Question 33

Internal Carotids give rise to

Answer 33

Anterior communicating artery

Question 34

Ant comm art connects the

Answer 34

2 anterior cerebral arteries (ACA) and 2 middle cerebral arteries (MCA)

Question 35

Posterior communicating artery

Answer 35

Extends back towards where the basilar artery joins the c of w

Question 36

What has basilar artery been formed by

Answer 36

Two vertebrals

Question 37

Basilar artery give rise to

Answer 37

Ant inferior cerebellar artery (AICA) and 2 posterior cerebral arteries (PCA)

Question 38

Vertebral arteries give rise to

Answer 38

The posterior inferior cerebellar arteries. (PICA)