Risher - CNS Vasculature Flashcards

1
Q

Main two arteries that supply the brain?

A

Anterior = Internal Carotid Artery

Posterior = Vertebral Artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Circle of Willis

A

Anterior Cerebral

Anterior Communicating Artery*

Posterior Communicating Artery

Posterior Cerebral

*Highest risk for Berry Aneurysm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cerebral Cortex Vascular Supply

A

Trunk, Leg, Foot, Genitals = Anterior Cerebral Artery

Arm, Hand, Face, Tongue = Middle Cerebral Artery (largest area)

Posterior Cerebran Artery = Bottom of cerebral cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the posterior cerebral artery a branch of?

A

Basilar Artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What vessel supplies the basal ganglia and posterior internal capsule?

What are they at risk for?

A

Penetrating Branches of Middle Cerebral Arteries

Thin walked, highly susceptible to rupture (elevated in hypertension)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

OPA

A

O = Opthalmic Artery

  • Central Retinal Artery
  • Ciliary Artery

P = Posterior Communicating Artery

  • Arises at level of optic chiasm, supplies hypothalamus, parts of thalamus

A = Anterior Choroidal Artery

  • Choroud plexus, Hippocampus, Amygdala, parts of thalamus, internal capsule, corpus striatum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Basilar Artery

A

Pontine Arteries (Pons)

Anterior Inferior Cerebellar Artery (AICA) (Inner Ear, Anterior/Inferior Cerebellum/Pons/Medulla)

Superior Cerebellar Artery (Surface of cerebellum)

Posterior Cerebral Artery (midbrain, occipital lobe, inferior lateral and medial temporal lobe), parts of thalamus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Vertebral Artery

A

Posterior Spinal Artery (dorsal 1/3 of spinal cord)

Anterior Spinal Artery (ventral 2/3 of spinal cord)

Posterior Inferior Cerebellar Artery (PICA) (Inferior surface of cerebellum, choroid plexus of 4th ventircle, dorsolateral medulla)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Occlusion of Posterior Inferior Cerebellar Artery (PICA)?

A

Wallenberg’s Syndrome

Damage to nucleus ambiguus, which innervates the laryngeal muscles

Symptoms: Dysphonia (lack of speech coordination), Dysarthria (unclear speech articulation), and Dysphagia (difficulty swallowing)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the flow of venous blood in the brain?

A

External Cerebral veins go upward to Superior Sagittal Sinus

Internal veins join to form Great Cerebral Vein (of Galen), joins Inferior Sagittal Sinus joins Straight Sinus joins Confluence of Sinuses join Transverse Sinus joins Sigmoid Sinus joins Jugular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the consequence of having single anterior artery and two posterior arteries around the spinal cord?

A

Posterior better suited to handle pathological issues since there is a “backup”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Blood Supply: Cortex

A

Anterior, Middle, Posterior Cerebral Artery (3x)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Blood Supply: Retina

A

Ophthalmic Artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Blood Supply: Basal Ganglia and Internal Capsule

A

ACA, MCA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Blood Supply: Thalamus

A

Posterior Communicating

Anterior Coroidal

Posterior Cerebral Artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Blood Supply: Midbrain

A

SCA (Superior Cerebral Artery), PCA

17
Q

Blood Supply: Pons

A

Pontine Arteries

Anterior Inferior Cerebellar Artery (AICA)

SCA (Superior Cerebellar Artery)

18
Q

Blood Supply: Medulla

A

AICA

PICA

19
Q

Blood Supply: Cerebellum

A

SCA

AICA

PICA

20
Q

Blood Supply: Spinal Cord

A

Anterior and Posterior Spinal Arteries

21
Q
A