tructure of the cerebellum, cerebellar connections

Question 1

I. The role of the cerebellum in performing complex movements
1. What is the role of Cortex?

Answer 1

Execution of movements

Question 2

I. The role of the cerebellum in performing complex movements
2. What is the role of Basal ganglia?

Answer 2

planning, selection of movements

Question 3

I. The role of the cerebellum in performing complex movements
3. What is the role of Cerebellum?

Answer 3

• coordination of movements: timing, force, direction
• detects and corrects motor error between the intended the actual movement
• indirect control over the ipsilateral side of the body
• No initiation of movements

Question 4

II. Functional subdivisions of the cerebellum
1. List the Cerebellar nuceli from lateral to medial

Answer 4

Dentate, emboliform, globose, fastigial
- Interposed nucleus: the emboliform and globose nuclei together
(* Don’t Eat Greased Food)

Question 5

II. Functional subdivisions of the cerebellum
2. Give the Phylogenetical classification of the cerebellum

Answer 5

• Archicerbellum = vestibulocerebellum
• Paleocerebellum = spinocerebellum
• Neocerebellum = cerebrocerebellum

Question 6

II. Functional subdivisions of the cerebellum
3. The role of Spinocerebellum

Answer 6

• Motor coordination
• Regulation of the muscle tone

Question 7

II. Functional subdivisions of the cerebellum
4. The role of Cerebrocerebellum

Answer 7

• Motor planning
• Timing of movements
• Cognitive functions

Question 8

II. Functional subdivisions of the cerebellum
5. The role of Vestibulocerebellum

Answer 8

• Posture and balance control
• Coordination of head and eye movements (VOR)

Question 9

III. The cerebellar peduncles
1. List all the The cerebellar peduncles

Answer 9

Superior (SCP)
Middle (MCP)
Inferior (ICP)

Question 10

III. The cerebellar peduncles
2. Characteristics of Superior (SCP)

Answer 10

• Contains afferent and efferent fibers
• Rostral connections:
  thalamus and mesencephalon
• Except: ventral spinocerebellar tract

Question 11

III. The cerebellar peduncles
3. Characteristics of Middle (MCP)

Answer 11

• The thickest
• Contains afferent fibers only
• Pontocerebellar tract -forwards information from the cortex

Question 12

III. The cerebellar peduncles
4. Characteristics of Inferior (ICP)

Answer 12

• Contains afferent and efferent fibers
• Caudal connections:
  spinal cord, medulla oblongata, vestibular ganglia