Lecture - Nervous System (Neuroanatomy 2 Jasoni)

Question 1

What is the flow of CSF?

Answer 1

First, it is made everywhere in the ventricles since the choroid plexus lines all the venticles. It drains from the lateral ventricles to the 3rd ventricle and then through the cerebral acqueduct to go to 4th ventricle. From there, it goes through the median and lateral apertures and then drains into the cisterna magna (an opening into the subarachnoid space). It fills the subarachnoid space and then eventually drains into the venous sinus through the arachnoid granuations.

Question 2

What does the diencephalon include?

Answer 2

Thalamus and hypothalamus

Question 3

What is the orange?

Answer 3

Pineal gland

Question 4

This is the front surface - label it

Answer 4

Question 5

This is the dorsal surface (back - facing cerebellum). Label it

Answer 5

Question 6

Label

Answer 6

Question 7

Label

Answer 7

Question 8

Label

Answer 8

Question 9

Looking at the cerebellum from the fourth ventricle

Answer 9

Question 10

What are the three functional divisions of the cerebellum and what does each include and do?

Answer 10

1. Spinocerebellum - inludes the vermis and the intermediate hemispheres. Controls posture and movement of trunk
2. Cerebrocerebellum - includes the lateral hemispheres and controls the planning of movements
3. Vestibulocerebellum - includes the flocculonodular lobe. This is for balance, head and eye movement.

Question 11

Name the deep nuclei of the cerebellum

Answer 11

Question 12

So in general, you lose your coordination of muscle activity with cerebellar dysfunction. But what 4 things specifically can happen when you have cerebellar dysfunction?

Answer 12

• Ataxia

– Inaccuracy in the speed, force and distance of movement

􀀂 staggering gait, dysmetria, slurred speech

• Tremor

– Involuntary oscillation of the limbs or trunk

• Nystagmus

– Involuntary rhythmic oscillation of the eyes

• Headache and vomitting