Motor 4: Motor function of the brain stem

Question 1

Pontine reticular formation (facilitatory )is enhanced by

Answer 1

• Motor Area 4
• Neocerebellum
• Vestibular nucleus
  Sensory pathway

Question 2

Pontine reticular formation gives rise to

Answer 2

1. Ascending branches: to thalamus as Reticular activating system (gives alertness during slow pain)
2. Descending Branches: through ** Ventral Reticulospinal Tract**, transmitting Facilitatory Signal to gamma motor Neurone

Question 3

Medullary Reticular formation (Inhibitory) is drivin by impulses from

Answer 3

• Paleocerebellum
• Basal ganglia
• Suppressor Area of Motor cortex

Question 4

Medullary Reticular formation gives inhibitory to

Answer 4

Lateral reticulospinal tract to Gamma motor neurone