Vestibular

Question 1

Medial Vestibulospinal Tract

Answer 1

1. Semi Canals activated
2. Medial Vestibular Nuclei (medulla) descent bilaterally down spinal cord.
3. Synapse on medial LMNs (axial muscles)

Question 2

Medial Vestibulospinal Tract results in what reflex?

Answer 2

Vestibulo-Cervical Reflex: neck extends during a fall

Question 3

Lateral Vestibulospinal Tract

Answer 3

1. Otolith activated

2. Lateral Vestibular Nuclei (pons) descend ipsilaterally down spinal cord.

Question 4

Lateral Vestibulospinal Tract results in what reflex?

Answer 4

Vestibulospinal Reflex: excites extensors, inhibits flexors
Active all the time to maintain stance.
Active when falling to one side.

Question 5

Vestibular damage symptoms

Answer 5

Decreased postural stability
Gait alterations
Difficulty balancing

Question 6

Balance is a product of…

Answer 6

Normal vestibular function
Vision
Proprioception