QuestionSBA
QuestionChoice
The middle cerebral artery supplies the lateral parts of the cerebral hemispheres. Due to this, more functions are likely affected leading to symptoms such as aphasia. Also, the upper limb would be more affected than the lower limb as the upper limb is represented on the lateral part of the motor homunculus.
10027828
c
Left middle cerebral artery
QuestionChoice
The anterior cerebral artery is correct as the motor and sensory cortexes are affected. However, nerves cross over after leaving the central nervous system so lesions on the left-hand side of the brain will affect the right-hand side of the body.
10027827
b
Right anterior cerebral artery
QuestionChoice
A stroke in the basilar artery would lead to "locked-in" syndrome where the patient is unable to move at all, apart from eye movements.
10027830
e
Basilar artery
QuestionChoice
As this patient's right-hand side is affected, the lesion will be in the left-hand side of the brain. This is because the nerve fibres cross over after leaving the central nervous system. Furthermore, if it were a middle cerebral artery occlusion, a homonymous hemianopia may be seen due to the involvement of the optic radiation.
10027829
d
Right middle cerebral artery
QuestionChoice
The anterior cerebral artery supplies the medial portion of each hemisphere, including the parietal and frontal lobes. Therefore, both motor and sensory functions are impaired. The lower limb is more affected than the right in terms of motor function because the lower limb is represented more medially on the motor homunculus.
10027826
a
Left anterior cerebral artery
Concept
Chapter
2693
3743
Ischaemic Stroke
Topic
141
Neurology
17963
A 67-year-old woman is rushed to A+E as her partner believes she is having a stroke. On examination, power is 5/5 for both left limbs, but reduced to 2/5 for the right lower limb and 3/5 for the right lower limb. There is also sensory loss on the entire right-hand side.

Which artery has likely been affected?
a