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Nerve roots in the cervical vertebrae affect these parts of the body:

• C1 pituitary gland, scalp, brain, ears, eyes
• C2 head, eyes, tongue, ears, heart
• C3 face, neck, ears, shoulders, diaphragm
• C4 face, neck, chest, diaphragm
• C5 neck, vocal cords, shoulders, upper arms, diaphragm
• C6 shoulders, arms, tonsils
• C7 shoulders, arms, elbows, wrists, hands

Nerve roots in the thoracic vertebrae affect these parts of the body:

• T1 head, neck, heart, thyroid, esophagus, trachea, hands, elbows
• T2 head, neck, heart, lungs, upper arms
• T3 head, neck, heart, lungs, chest, upper arms
• T4 head, neck, heart, lungs, gallbladder, upper arms
• T5 head, neck, heart, liver, esophagus, blood circulation, upper arms
• T6 esophagus, stomach, spleen, pancreas, duodenum, mid-back
• T7 stomach, spleen, pancreas, duodenum, liver, gallbladder, mid-back
• T8 stomach, spleen, pancreas, liver, gallbladder, adrenal glands, mid-back
• T9 stomach, spleen, pancreas, adrenal glands, gallbladder, reproductive organs, liver, small intestine
• T10 stomach, spleen, pancreas, small intestine, reproductive organs, appendix, large intestine, legs
• T11 kidneys, reproductive organs, legs, small intestine, large intestine, bladder, adrenal glands, ileocecal valve
• T12 kidneys, reproductive organs, legs, small intestine, large intestine, bladder, upper and lower back, ileocecal valve

Nerve roots in the lumbar vertebrae affect these parts of the body:

• L1 abdomen, reproductive organs, legs, feet, large intestine, bladder
• L2 reproductive organs, legs, feet, large intestine, bladder, appendix, abdomen
• L3 reproductive organs, bladder, prostate, large intestine, legs, feet
• L4 buttocks, legs, feet, prostate, muscles of the lower back
• L5 buttocks, legs, feet, toes, prostate

Nerve roots in the sacral region affect these parts of the body:

Sacrum – buttocks, legs, feet, bladder, prostate, reproductive organs, anus.

Nerve roots in the coccygeal region affect these parts of the body:

Coccyx – anus, rectum.