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PERITONEUM-INNERVATION

Anatomy-Abdomen

PERITONEUM-INNERVATION

1. Parietal peritoneum - supplied segmentally by spinal (intercostal and lumbar) nerves innervating the overlying muscles.

2. Diaphragmatic peritoneum - supplied by the phrenic nerve (C3, 4, 5), hence referred pain from the diaphragm is felt at the tip of the shoulder.

3. Visceral peritoneum has no afferent supply - pain from diseased viscera is due to muscular spasm, tension on mesenteric folds or involvement of the adjacent parietal peritoneum.

4. Mesenteric root - possesses numerous Pacinian corpuscles (mechanoreceptors) which serves a protective function by causing the reflex contraction of abdominal muscles to support the abdominal viscera during jarring movements which may cause undue traction on their attachments


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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