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NERVE SUPPLY OF THE LIMBS

Anatomy-General

NERVE SUPPLY OF THE LIMBS

1. In all vertebrates the skin and muscles of the limbs are supplied by plexuses. These are formed from anterior rami, never from posterior rami.

2. The spinal nerves entering into limb plexuses arise from enlarged portions of the cord due to increased number of motor neurons. Cervical enlargement (brachial plexus), lumbar enlargement (lumbar/sacral plexuses).

3. The constituents of every limb plexus divides into anterior & posterior divisions.

4. Anterior division to flexor compartment, posterior division to extensor compartment.

5. The most caudal root of a limb plexus is distributed to the flexor compartment of a limb: T1 of the brachial plexus & S3 of the sacral plexus.


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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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