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==Skin Dermatomes== | |||
Image shows the approximate spinal cord nerve segmental innervation of the skin regions. Note this patter was established before the [[:File:Stage19- limb rotation.jpg|week 8 limb rotation]], so this pattern is rotated for both the upper and lower {{limb}}s. | |||
[[Category:Neural]] [[Category:Sensory]] [[Category:Limb]] [[Category: | ===Spinal Nerve Pattern=== | ||
{{Spinal Nerve Pattern table}} | |||
:'''Links:''' {{touch}} | {{limb}} | {{integumentary}} | |||
===Reference=== | |||
Image Source: http://en.wikipedia.org/wiki/File:Dermatoms.svg | |||
{{Footer}} | |||
[[Category:Neural]] [[Category:Sensory]] [[Category:Limb]] [[Category:Integumentary]] |
Latest revision as of 18:26, 24 May 2018
Skin Dermatomes
Image shows the approximate spinal cord nerve segmental innervation of the skin regions. Note this patter was established before the week 8 limb rotation, so this pattern is rotated for both the upper and lower limbs.
Spinal Nerve Pattern
Spinal Nerve | Acronym | Innervation |
---|---|---|
Cervical spinal nerve 2 | C2 | At least one cm lateral to the occipital protuberance at the base of the skull. Alternately, a point at least 3 cm behind the ear |
Cervical spinal nerve 3 | C3 | In the supraclavicular fossa, at the mid-clavicular line. |
Cervical spinal nerve 4 | C4 | Over the acromioclavicular joint. |
Cervical spinal nerve 5 | C5 | On the lateral (radial) side of the antecubital fossa, just proximally to the elbow. |
Cervical spinal nerve 6 | C6 | On the dorsal surface of the Proximal phalanges, proximal phalanx of the thumb |
Cervical spinal nerve 7 | C7 | On the dorsal surface of the Proximal phalanges, proximal phalanx of the middle finger |
Cervical spinal nerve 8 | C8 | On the dorsal surface of the proximal phalanx of the little finger. |
Thoracic spinal nerve 1 | T1 | On the medial (ulnar) side of the antecubital fossa, just proximally to the medial epicondyle of the humerus. |
Thoracic spinal nerve 2 | T2 | At the apex of the axilla. |
Thoracic spinal nerve 3 | T3 | Line-line intersection (Intersection of the mid-clavicular line and the third intercostal space |
Thoracic spinal nerve 4 | T4 | Intersection of the midclavicular line and the fourth intercostal space, located at the level of the nipples. |
Thoracic spinal nerve 5 | T5 | Intersection of the midclavicular line and the fifth intercostal space, horizontally located midway between the level of the nipples and the level of the xiphoid process. |
Thoracic spinal nerve 6 | T6 | Intersection of the midclavicular line and the horizonal level of the xiphoid process. |
Thoracic spinal nerve 7 | T7 | Intersection of the midclavicular line and the horizontal level at one quarter the distance between the level of the xiphoid process and the level of the umbilicus. |
Thoracic spinal nerve 8 | T8 | Intersection of the midclavicular line and the horizontal level at one half the distance between the level of the xiphoid process and the level of the umbilicus. |
Thoracic spinal nerve 9 | T9 | Intersection of the midclavicular line and the horizontal level at three quarters of the distance between the level of the xiphoid process and the level of the umbilicus. |
Thoracic spinal nerve 10 | T10 | Intersection of the midclavicular line, at the horizontal level of the umbilicus. |
Thoracic spinal nerve 11 | T11 | Intersection of the midclavicular line, at the horizontal level midway between the level of the umbilicus and the inguinal ligament. |
Thoracic spinal nerve 12 | T12 | Intersection of the midclavicular line and the midpoint of the inguinal ligament. |
Lumbar spinal nerve 1 | L1 | Midway between the key sensory points for T12 and L2. |
Lumbar spinal nerve 2 | L2 | On the anterior medial thigh, at the midpoint of a line connecting the midpoint of the inguinal ligament and the medial epicondyle of the femur. |
Lumbar spinal nerve 3 | L3 | At the medial epicondyle of the femur. |
Lumbar spinal nerve 4 | L4 | Over the medial malleolus. |
Lumbar spinal nerve 5 | L5 | On the foot dorsum dorsum of the foot at the third metatarsophalangeal joint. |
Sacral spinal nerve 1 | S1 | On the lateral aspect of the calcaneus. |
Sacral spinal nerve 2 | S2 | At the midpoint of the popliteal fossa. |
Sacral spinal nerve 3 | S3 | Over the tuberosity of the ischium or infragluteal fold. |
Sacral spinal nerve 4 | S4 | In the perianal area, less than one cm lateral to the mucocutaneous zone. |
Sacral spinal nerve 5 | S5 | In the perianal area, less than one cm lateral to the mucocutaneous zone. |
Links: | Spinal Nerve Dermatomes | Spinal Nerve Myotomes | touch | integumentary |
- Links: touch | limb | integumentary
Reference
Image Source: http://en.wikipedia.org/wiki/File:Dermatoms.svg
Cite this page: Hill, M.A. (2024, April 25) Embryology Dermatomes.png. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Dermatomes.png
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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