Cornu

Cornu is a term used in anatomy to describe a structure that resembles a horn. It is derived from the Latin word for "horn". There are several structures in the human body that are referred to as cornu due to their horn-like shape.

Anatomy

In the human body, the term cornu is used to refer to several different structures:

• Cornu Ammonis: This is a part of the hippocampus in the brain, which is involved in memory formation and spatial navigation. The Cornu Ammonis is divided into four regions, CA1, CA2, CA3, and CA4.

• Cornu Cutaneum: This is a type of cutaneous horn, a conical projection above the surface of the skin that resembles a miniature horn. Cornu cutaneum is usually associated with a wide range of underlying benign, premalignant, and malignant lesions.

• Cornu Inferior and Cornu Superior: These are parts of the thyroid cartilage in the throat. The cornu inferior and cornu superior are the lower and upper horns of the thyroid cartilage, respectively.

• Cornu Sacrale: These are the four pairs of horn-like projections on the back of the sacrum, a large, triangular bone at the base of the spine.

Clinical Significance

The various cornu in the human body can be affected by a range of medical conditions. For example, damage to the Cornu Ammonis in the brain can lead to memory problems and difficulties with spatial navigation. Cornu cutaneum, the cutaneous horn, can be a sign of underlying skin conditions, including skin cancer.

See Also

• Anatomy
• Hippocampus
• Cutaneous horn
• Thyroid cartilage
• Sacrum

References

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