Innervation of the skin: Dermatomes

A dermatome is an area of skin innervated by the cutaneous branches of a single spinal nerve (all spinal nerves except C1).

The dermatomes of the trunk are almost horizontal.

The upper limbs nerves come from the brachial plexus.

The anterior surface of the lower limbs come from the lumbar plexus nerves.

The posterior surface of the lower limbs come from the sacral plexus nerves.

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Painting by Michael Reedy

[spoiler title="The Basics. Start here. This is your Foundation." open="0" style="1"]

[spoiler title="Epithelial and Connective Tissue" open="0" style="1"]

[spoiler title="Skin, Hair, Nails, Sweat Glands" open="0" style="1"]

[spoiler title="The Skeletal System" open="0" style="1"]

[spoiler title="The Muscular System" open="0" style="1"]

[spoiler title="The Central Nervous System" open="0" style="1"]

YOU ARE HERE AT THE PNS

[spoiler title="The Peripheral Nervous System" open="0" style="1"]

[spoiler title="The Autonomic Nervous System" open="0" style="1"]

[spoiler title="Special Senses" open="0" style="1"]

[spoiler title="The Cardiovascular System" open="0" style="1"]

[spoiler title="Specialized Systems" open="0" style="1"]