Nervous system 1

The meningeal structure that separates the cerebrum from the cerebellum is the

• falx cerebri

• tentorium cerebelli

• falx cerebelli

• diaphragma sellae

Aparna doesn't make enough CSF! What structure might be the problem?

• oligodendrocytes

• choroid plexus

• arachnoid mater

• fornix

Draw the 4th ventricle, including all the openings

Which of the following correctly identifies vessels of the circle of Willis?

1. 1. anterior cerebral artery

2. 2. anterior communicating artery

3. 3. anterior cerebellar artery

4. 4. posterior communicating artery

5. 5. posterior cerebellar artery

6. 6. vertebral artery

7. 7. carotid artery

8. 8. middle cerebral artery

• 1, 2, 4, 5, 7

• 1, 2, 4, 5, 6, 8

• 1, 2, 4, 6, 8

• 1, 2, 4

Which tract(s) carries proprioceptive information?

• A. Spinothalamic

• B. Spinocerebellar

• C. Medial lemniscus

• B and C only

• All of the above

White rami communicans are only present between

• C8 and L2

• C5 and C8

• T1 to L2

• T2 to S4

What structure conducts electrical activity from the outside to the inside of a muscle cell?

• Sarcoplasmic reticulum

• Z disks

• M line

• T tubules

• Sarcolemma

In the ANS, preganglionic neurons release _____________ which binds to ____________ receptors on the post-synaptic cell.

• Acetylcholine, muscarinic

• Acetylcholine, nicotinic

• Norepinephrine, beta adrenergic

• Norepinephrine, nicotinic

Which spinal tract decussates at the pyramids?

• spinothalamic

• anterior corticospinal

• medial lemniscus

• lateral corticospinal