Hypothalamospinal fibers

Hypothalamospinal fibers are descending tracts that connect the hypothalamus to the spinal cord, playing a crucial role in autonomic control. While their precise pathways remain unclear, they are believed to form part of the reticulospinal tract.

Following their origin from the hypothalamus, these fibers descend through the lateral white column of the spinal cord, ultimately synapsing with autonomic motor cells in the lateral gray horns. This connection enables the hypothalamus to influence both sympathetic and parasympathetic outflow, regulating various bodily functions such as heart rate, blood pressure, and pupil dilation. This allows for coordinated control of visceral functions and adaptation to changing environmental conditions.