This flashcard is just one of a free flashcard set. See all flashcards!
55
motion of fluid in vestibuar labyrinth activates hair cells. they signal the vestibular nuclei via cranial nerve 8. it then conveys normtaion via two tracts, name them and what they do.
Lateral vestibulospinal tract: The lateral vestibulospinal tract descends ipsilaterally through the entire spinal cord. It terminates in lamina VII and VIII and is excitatory to motor neurons of paravertebral and proximal limb extensors (antigravity muscles). T
Medial vestibulospinal tract: The medial vestibulospinal tract descents bilaterally in the medial portion of the ventral funiculus in a tract also called the medial longitudinal fasciculus (MLF). This tract extends only to cervical and upper thoracic levels. Yokes CN III, IV, VI in eye movements; controlling head and neck position (movement) and gaze control
Medial vestibulospinal tract: The medial vestibulospinal tract descents bilaterally in the medial portion of the ventral funiculus in a tract also called the medial longitudinal fasciculus (MLF). This tract extends only to cervical and upper thoracic levels. Yokes CN III, IV, VI in eye movements; controlling head and neck position (movement) and gaze control
