Neuroscience formative questions

Question 1

What is wrong with this statement?
Blood from the cerebral circulation drains into sinuses that are formed between the dura and arachnoid

Answer 1

The sinuses are formed between the meningeal and periosteal layers

Question 2

What is wrong with this statement?
The cavernous sinus does not receive blood from the orbit

Answer 2

It does - via the superior ophthalmic vein

Question 3

What is wrong with this statement?
Cerebrospinal fluid is re-adsorbed into the inferior sagittal sinus

Answer 3

Cerebrospinal fluid is re-adsorbed into the superior sagittal sinus

Question 4

How is venous blood from the cerebral circulation returned to the heart?

Answer 4

Via the internal jugular veins

Question 5

What is wrong with this statement?
The communicating arteries act as a functional anastamoses between the left and right cerebral circulations

Answer 5

ELEPHANT

Question 6

What is wrong with this statement?
A stroke affecting the internal capsule is usually embolic

Answer 6

Normally haemorrhagic - of lenticulostriate artery

Question 7

What is wrong with the statement…
A right hemisphere stroke is likely (i.e. > 50%) to cause dysphasia in a left handed individual

Answer 7

Only 15% left handers have Broca’s on the right hand side

Question 8

Where is the internal capsule?

Answer 8

Divides the caudate nucleus and the thalamus from the internal 15 MINUTES THROUGH

Question 9

What is wrong with this statement?
The corticospinal tract originates from the ventrolateral (motor) thalamic nucleus

Answer 9

The pyramidal tract originates from the ventrolateral thalamic nucleus
Corticospinal tracts originate from the motor cortex

Question 10

What is wrong with this statement?
The motor cortex produces an abnormal rhythmical output in Parkinson’s disease

Answer 10

Parkinson’s is a disorder of the Basal Ganglia

Question 11

What is wrong with this statement?
A stroke affecting the motor cortex will result in a greater neurological deficit than the same sized stroke affecting the internal capsule

Answer 11

It will result in a LESSER neurological deficit

Question 12

What is wrong with this statement?
The lateral corticospinal tract decussates at the level of the pons

Question 13

Are we expected to know/learn Brodmann’s areas?

Answer 13

NO
But are expected to know he looked through a microscope to see the different cellular make-ups of the brain and map out where they differ - our learning by sulci/gyri is a more crude division of function

Question 14

What is the single best answer on the primary motor cortex?

• The corticospinal tract originates from the ventrolateral (motor) thalamic nucleus
• The corticospinal tracts pass between the basal ganglia and thalamus to enter the cerebral peduncle
• The lateral corticospinal tract decussates at the level of the pons
• A stroke affecting the motor cortex will result in a greater neurological deficit than the same sized stroke affecting the internal capsule
• The motor cortex produces an abnormal rhythmical output in Parkinson’s disease

Answer 14

The corticospinal tracts pass between the basal ganglia and thalamus to enter the cerebral peduncle
They form the internal capsule