Template:Spinal Nerve Myotome table
From Embryology
| Spinal Nerve | Acronym | Innervation |
|---|---|---|
| Cervical spinal nerve 3 | C3 | supply the diaphragm for breathing. |
| Cervical spinal nerve 4 | C4 | |
| Cervical spinal nerve 5 | C5 | supply the diaphragm for breathing and supply shoulder muscles and muscles to bend our elbow. |
| Cervical spinal nerve 6 | C6 | for bending the wrist back. |
| Cervical spinal nerve 7 | C7 | for straightening the elbow. |
| Cervical spinal nerve 8 | C8 | bends the fingers. |
| Thoracic spinal nerve 1 | T1 | spreads the fingers and supplies the chest wall and abdominal muscles. |
| Thoracic spinal nerve 2 | T2 | At the apex of the axilla. |
| supplies the chest wall and abdominal muscles. | 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 Myotomes | ||
- C3,4 and 5 supply the diaphragm for breathing.
- C5 supply shoulder muscles and muscles to bend our elbow.
- C6 for bending the wrist back.
- C7 for straightening the elbow.
- C8 bends the fingers.
- T1 spreads the fingers.
- T1 –T12 supplies the chest wall and abdominal muscles.
- L2 bends the hip.
- L3 straightens the knee.
- L4 pulls the foot up.
- L5 wiggles the toes.
- S1 pulls the foot down.
- S3,4 and 5 supply the bladder, bowel, sex organs, anal and other pelvic muscles.
