Radial sulcus

Radial Sulcus

The Radial Sulcus (also known as the Sulcus of Rolando or Central Sulcus) is a prominent structure in the human brain. It is a deep groove that separates the frontal lobe and the parietal lobe.

Etymology

The Radial Sulcus is named after Luigi Rolando, an Italian anatomist who made significant contributions to the understanding of the nervous system in the 19th century.

Anatomy

The Radial Sulcus runs from the medial longitudinal fissure to the lateral sulcus on both hemispheres of the brain. It is an important landmark as it separates the primary motor cortex located in the precentral gyrus (in the frontal lobe) from the primary somatosensory cortex in the postcentral gyrus (in the parietal lobe).

Function

The Radial Sulcus plays a crucial role in separating the brain's areas responsible for motor control and sensory perception. The precentral gyrus, located anterior to the Radial Sulcus, is involved in motor function, while the postcentral gyrus, located posterior to the Radial Sulcus, is involved in sensory perception.

Clinical Significance

Damage to the areas around the Radial Sulcus can lead to motor or sensory deficits. For example, a stroke affecting the blood supply to this area can result in paralysis or loss of sensation on the opposite side of the body.

Related Terms

• Sulcus (neuroanatomy)
• Gyrus
• Frontal lobe
• Parietal lobe
• Motor cortex
• Somatosensory cortex

See Also

• Brain
• Cerebral cortex
• Neuroanatomy

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