Hypothalamic sulcus

Hypothalamic sulcus is a structure found in the brain, specifically in the diencephalon. It serves as a boundary between the thalamus and the hypothalamus. The hypothalamic sulcus, also known as the sulcus of Monroe, is a groove that runs horizontally along the lateral wall of the third ventricle.

Etymology

The hypothalamic sulcus is named after the anatomist who first described it, Alexander Monro. The term "sulcus" is derived from the Latin word for "groove".

Anatomy

The hypothalamic sulcus begins at the inter ventricular foramen (also known as the foramen of Monro), and extends posteriorly along the lateral wall of the third ventricle. It marks the boundary between the thalamus above and the hypothalamus below. The hypothalamic sulcus is an important anatomical landmark in neuroanatomy, as it helps to distinguish between these two parts of the diencephalon.

Function

The hypothalamic sulcus does not have a specific function beyond serving as an anatomical boundary. However, the structures it separates, the thalamus and hypothalamus, have significant roles in the body. The thalamus is involved in sensory and motor signal relay and the regulation of consciousness and sleep. The hypothalamus controls a variety of important functions in the body, including the release of hormones, regulation of body temperature, and control of food and water intake.

Related Terms

• Diencephalon
• Thalamus
• Hypothalamus
• Ventricle (brain)
• Interventricular foramen

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