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NURS 6901 NEURO EXAM
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NURS 6901 NEURO EXAMWhat is the list of cranial nerves from anterior to posterior? - ANSWER Think
"Oh, oh, oh, to touch and feel very good velvet. Such heaven!"
1. Olfactory nerve
2. Optic nerve
3. Oculomotor
4. Trochlear
5. Trigeminal
6. Abducens
7. Facial
8. Vestibulocochlear
9. Glossopharyngeal
10. Vagus
12. Hypoglossal
11. (Spinal) Accessory
What are the layers of the brain from the skull to the inner layer? - ANSWER Dura
(outermost layer)
Arachnoid (middle layer)
Pia (Innermost layer)
What is a subdural hematoma? - ANSWER This is a hematoma that occurs
between the dura and the arachnoid layer of the brain. These are usually venous
bleeds
, What is a subarachnoid hematoma? - ANSWER This is a bleed between the dura
and pia layer of the brain. Most often this is a arterial bleed
Where is CSF produced? - ANSWER choroid plexus (which is located in the lateral
and 3rd ventricles)
What is the rate of CSF production? - ANSWER 15-20 mL/hr (average total
volume is 150 mL)
What is the flow of CSF? - ANSWER - Produced by the choroid plexus lining the
ventricles
- Flows from the lateral ventricles into the 3rd ventricle via the foramen of monro
- Flows from the 3rd ventricle to the 4th ventricle via the cerebral aqueduct of
sylvius
- Flows from the 4th ventricle into the subarachnoid space via the foramen of
Luschka
-Is reabsorbed by the arachnoid villi
What is normal blood flow to the brain for 100g of tissue? - ANSWER 50
mL/100g/min
OR
150 mL/min
How does the circle of willis work?What - ANSWER 1. The circle of willis is an
anastomotic ring at the base of the skull
2. On the anterior portion of the Circle, internal carotid arteries supply blood
3. On the posterior side, bilateral vertebral arteries (which originate from the
subclavian arteries) converge to form the basilar artery; this will eventually split
into posterior cerebral artery and will merge with the posterior communicating
artery of the circle of willis
What percentage of blood supply to the brain do the internal carotid arteries
supply? - ANSWER 70%
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