Neuroanatomy - blood supply to brain

Question 1

Posterior Cerebral Artery (PCA)

Answer 1

vertebral arteries join together to form the basilar artery

basilar artery terminates by splitting into the PCA

Question 2

What does basilar artery give rise to

Answer 2

pontine arteries -> pons
Cerebellar artieries -> cerebellum

Question 3

Middle Cerebral Artery (MCA)

Answer 3

internal carotid continues on to become the MCA

Question 4

Anterior Cerebral Artery (ACA)

Answer 4

Internal carotid splits into the ACA

Question 5

Posterior Communicating Arteries

Answer 5

comes from the PCA

connects right PCA to right MCA

connects left PCA to left MCA

Question 6

Anterior Communicating Arteries

Answer 6

comes from ACA

connects right and left ACAs

Question 7

ACA perfusion areas

Answer 7

prefrontal cortex, motor cortex (lower limb), sensory cortex (lower limb)

Question 8

MCA perfusion areas

Answer 8

Broca’s area, motor cortex (head, neck, trunk, arm), sensory cortex (head, neck, trunk, arm), Wenicke’s area

Question 9

PCA Perfusion area

Answer 9

Occipital Lobe

Question 10

ACA Blood flow disruption functional impact

Answer 10

prefrontal cortex: disruption to higher cognition and personality

Motor cortex (lower limb): disruption to voluntary movement of the legs (contralateral)

Sensory cortex (lower limb): disruption to touch sensations from the legs (contralateral)

Question 11

MCA blood flow disruption functional impact

Answer 11

Broca’s area: disruption to forming language (production)

Motor cortex (head, neck, trunk, arm): disruption to voluntary movement of face, throat, arms and hands (contralateral)

Sensory cortex (head, neck, trunk, arm): disruption to touch sensations from the face, throat, arms and hands (contralateral)

Wenicke’s area: disruption to language understanding (comprehension)

Question 12

PCA blood flow disruption functional impact

Answer 12

occipital lobe: disruption to vision, possible colour blindness, disrupted reading and writing (dyslexia)