CNS part 5

Question 1

common carotids divide to form

Answer 1

the internal and external carotids at the carotid sinus

Question 2

what does the carotid sinus contain

Answer 2

baroreceptors and chemoreceptors

Question 3

what does the external carotids supply

Answer 3

neck and outside of skull

Question 4

external carotids form

Answer 4

lingual artery
facial artery
occipital artery
superficial temporal artery

Question 5

what enters the skull to deliver blood to the brain

Answer 5

internal carotids

Question 6

what do the internal carotids branch to form

Answer 6

ophthalmic artery
anterior cerebral artery
middle cerebral artery

Question 7

what supplies the midbrain and lateral surfaces of the cerebrum

Answer 7

middle cerebral artery

Question 8

left and right vertebral arteries fuse to form the

Answer 8

basilar artery

Question 9

where does the basilar artery branch

Answer 9

area of the pons

Question 10

what connects the basilar artery and internal carotid arteries

Answer 10

posterior cerebral and posterior communicating arteries

Question 11

ring like anastomosis is called the

Answer 11

CEREBRAL ARTERIAL CIRLE- circle of wallis

Question 12

what connects the R and L anterior cerebral arteries

Answer 12

anterior communicating artery

Question 13

basilar artery splits into the

Answer 13

R and L posterior cerebral arteries

Question 14

posterior communicating arteries connect the

Answer 14

posterior cerebral arteries with the middle cerebral arteries

Question 15

the circle of willis is a

Answer 15

safety mechanism

Question 16

3 main arteries supply the cerebellum

Answer 16

superior cerebellar
anterior inferior cerebellar
posterior inferior cerebellar

Question 17

how long does it take to have permanent neuronal damage

Answer 17

4 minutes

Question 18

vertebral to

Answer 18

basilar to posterior cerebral arteries to posterior communicating arteries

Question 19

middle cerebral artery (MCA) found in

Answer 19

frontal, parietal, and temporal lobes

Question 20

anterior cerebral artery (ACA) found in

Answer 20

inferior frontal lobe + medial surface of frontal and parietal lobes

Question 21

what is responsible for blood supply for upper extremity of motor and somatosensory cortices

Answer 21

MCA

Question 22

what is responsible for blood supply to lower extremities of somatosensory and motor cortices

Answer 22

ACA

Question 23

what is the posterior cerebral artery (PCA) responsible for

Answer 23

inferior and medial temporal and occipital lobes + thalamus

Question 24

cerebral perfusion pressure (CPP) is

Answer 24

pressure the blood is delivered to the brain at the capillary level

Question 25

intracranial pressure is

Answer 25

pressure inside the skull due to bran tissues and fluid

Question 26

CPP =

Answer 26

MAP - ICP

Question 27

ICP may be high in

Answer 27

traumatic brain injury

Question 28

what is more important than maintaining CPP

Answer 28

maintaining CBF

keeping delivery of glucose and O2 to brain sufficient