Crura

Crura refers to a pair of anatomical structures in the human body. The term is derived from the Latin word for "leg". In the context of human anatomy, crura can refer to the lower part of the leg or to similar structures in the body that resemble a leg or a pair of legs.

Anatomy

There are several structures in the human body referred to as crura:

• The Crus of diaphragm (plural: crura of diaphragm) are two tendinous structures that extend downward from the diaphragm muscle. They are named for their leg-like appearance.

• The Crus of penis (plural: crura of penis) are the portions of the penis located at the base of the organ, extending laterally from the bulb.

• The Crus of clitoris (plural: crura of clitoris) are the erectile tissues that branch off the clitoral body, extending back into the body in a V shape.

• The Crus of helix is a part of the external ear, specifically a part of the auricle or pinna.

• The Crus of fornix (plural: crura of fornix) are white matter tracts in the brain, connecting the hippocampus to the mammillary bodies.

Clinical significance

The crura of the diaphragm play a significant role in breathing, as they help to anchor the diaphragm and allow it to contract and relax. Dysfunction of the crura can lead to conditions such as diaphragmatic hernia.

The crura of the penis and clitoris are involved in sexual arousal and orgasm. Damage or disease affecting these structures can lead to sexual dysfunction.

The crura of the helix are part of the external ear and can be involved in conditions affecting the ear, such as otitis externa.

The crura of the fornix are part of the limbic system in the brain, and damage to these structures can affect memory and emotion.

See also

• Anatomy
• Diaphragm (anatomy)
• Penis
• Clitoris
• Helix (ear)
• Fornix (brain)

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