QuestionSBA
QuestionChoice
This extra-pyramidal tract is responsible for modulating rotation and lifting of the head via cranial nerve XI (Spinal accessory nerve).
10025628
d
Medial vestibulospinal tract
QuestionChoice
This is not an extrapyramidal or motor tract but rather a sensory tract. It relays information on pain, temperature and crude touch from the face and forehead to the sensory cortex.
10025629
e
Spinal tract V
QuestionChoice
This extrapyramidal tract is responsible for maintaining posture. It works through motor neuron stimulation of the leg extensors and musculature of the trunk.
10025627
c
Lateral vestibulospinal tract
QuestionChoice
This extrapyramidal tract is responsible for modulating flexor muscle tone, modulating flexor reflexes e.g. to withdraw one's hand away from a hot pan.
10025626
b
Rubrospinal tract
QuestionChoice
Correct. This extrapyramidal tract originates in the superior colliculus. It is involved in coordinating reflex responses to bright lights and loud noises on the contralateral side of the body, orienting the head towards auditory and visual information.
10025625
a
Tectospinal tract
Concept
Chapter
2693
5854
Descending motor tracts
Topic
152
Neuroscience
17523
A 57 year old woman is reviewed in a specialist neurology clinic following a traumatic brain injury. She reports that she sometimes struggles to orientate herself towards sounds or sights in her environment. The clinician explains that there is a specific neurological tract that works to initiate reflex postural movements of the head in response to auditory and visual stimuli.

Which of the following extrapyramidal motor pathways is responsible for modulating reflex responses of the head to auditory and visual stimuli?
a