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A dermatome is an area of skin that is mainly supplied by afferent nerve fibres from the dorsal root of any given spinal nerve. [1] [2] There are 8 cervical nerves (C1 being an exception with no dermatome), 12 thoracic nerves, 5 lumbar nerves and 5 sacral nerves.
Posterior Dermatomes. The axial line is the line between two adjacent dermatomes that are not represented by immediately adjacent spinal levels. Although dermatomes are shown to be discrete segments on dermatomal maps (like in the image opposite), they are in fact not; adjacent dermatomes overlap with one another.
Dermatome may refer to: . Dermatome (anatomy), an area of skin that is supplied by a single pair of dorsal roots Dermatome (embryology), the portion of the embryonic paraxial mesoderm, the somite, which gives rise to dermis
A shingles rash typically appears in specific areas of the body (dermatomes) that are connected to certain nerves, Lipner explains. Usually, people only experience a shingles rash in one part of ...
Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve. In some cases, the dermatome is less specific (when a spinal nerve is the source for more than one cutaneous nerve), and in other cases it is more specific (when a cutaneous nerve is derived from multiple spinal nerves.) [1]
The C8 nerve receives sensory afferents from the C8 dermatome.This consists of all the skin on the little finger, and continuing up slightly past the wrist on the palmar and dorsal aspects of the hand and forearm. [3]
Peripheral nerve field refers to an area of skin innervated by a single nerve.A peripheral nerve field can also be described as cutaneous nerve distribution.. An area innervated by a single dorsal root is called a dermatome.
Alfred Blaschko, a private practice dermatologist from Berlin, first described and drew the patterns of the lines of Blaschko in 1901. He obtained his data by studying over 140 patients with various nevoid and acquired skin diseases and transposed the visible patterns the diseases followed onto dolls and statues, then compiled the patterns onto a composite schematic of the human body.