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Fibrous Capsule of Kidney (Posterior; Left)
Urogenital System

Fibrous Capsule of Kidney (Posterior; Left)

Capsula fibrosa renis

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Structure/Morphology

A thin fibrous capsule composed of collagen rich tissue with some elastic and smooth muscle fibers encloses each kidney. Each fibrous capsule is surrounded by renal fascia and a layer of perirenal fat, known as the adipose capsule of the kidney.

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Function

The tough fibrous capsule of the kidney helps to protect the kidney from injury and supports the kidney mass. Additionally, it plays a role in restricting volume changes of the kidney in response to increases in blood pressure (Pocock, Richards and Richards, 2013).

References

Pocock, G., Richards, C. D. & Richards, D. A. (2013) Human Physiology, 4 edition. OUP Oxford.

Learn more about this topic from other Elsevier products

Kidney Capsule

ScienceDirect image

If the kidney capsule is allowed to dry out, the cortex may tear when trying to insert the catheter under the capsule.

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