Blood Supply Flashcards
1
Q
Anterior circulation of blood to the brain occurs via which artery? And where is this artery located?
A
- internal carotid artery
- anterior, inside the skull
2
Q
Posterior circulation of the brain occurs via which artery? And where is this artery located?
A
- vertebral artery
- more posterior, outside the skull
3
Q
What is the function of the circle of Willis?
A
- an arterial anastomosis system on the base of the brain that provides a level of redundancy by linking the anterior and posterior circulation
4
Q
What functional areas of the brain are innervated by the middle cerebral artery?
A
- Broca’s area
- sensorimotor cortex
- Wernicke’s area
5
Q
What areas of the cortex are supplied by the anterior cerebral artery?
A
- medial surface of the frontal and parietal lobes
6
Q
What areas of the cortex are supplied by the posterior cerebral artery?
A
- medial surface of the occipital lobe and basal surface of occipital and temporal lobes
7
Q
What areas of the cortex are supplied by the middle cerebral artery?
A
- mainly lateral surface of all lobes
8
Q
What artery is the pons innervated by?
A
The basilar artery
9
Q
Describe the appearance of a stroke, and what that means for the brain tissue involved.
A
- a CNS ‘core’ so severely ischemic it is irreversibly damaged, surrounded by a ‘penumbra’, an area less ischemic (meaning tissue hasn’t died) that can be salvaged `
10
Q
What is the internal capsule?
A
- white matter structure of the brain
