Lateral vestibulospinal tract

Lateral vestibulospinal tract is a part of the vestibulospinal tract, which is a neural pathway responsible for mediating postural adjustments and head movements. It originates in the lateral vestibular nucleus and descends ipsilaterally in the spinal cord.

Anatomy

The lateral vestibulospinal tract begins in the lateral vestibular nucleus, which is located in the pons, a part of the brainstem. From there, it descends uncrossed through the medulla oblongata, another part of the brainstem, and continues down the length of the spinal cord. The fibers of this tract terminate on the interneurons and motor neurons that directly innervate the muscles controlling posture and balance.

File:Lateral vestibulospinal tract.png

Diagram showing the course of the lateral vestibulospinal tract

Function

The primary function of the lateral vestibulospinal tract is to maintain balance and posture. It does this by adjusting the tone of the extensor muscles in the body, particularly those in the lower limbs. This tract also plays a role in coordinating head movements with body movements.

Clinical significance

Damage to the lateral vestibulospinal tract can result in a variety of neurological disorders, including vestibular neuritis, Meniere's disease, and benign paroxysmal positional vertigo. These conditions can cause symptoms such as dizziness, vertigo, and problems with balance and coordination.

See also

• Medial vestibulospinal tract
• Vestibular system
• Motor system

References

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