clavicles
C5
lateral part of upper limbs
C5, C6, C7
medial side of upper limbs
C8, T1
thumb
C6
hand
C6, C7, C8
index and middle finger
C7
ring and little finger
C8, partly T1 for little
nipple
T4
umbilicus
T10
inguinal/groin area
T12
skin overlying inguinal ligament
L1
anterior and medial surface of lower limbs
L1-L4
anterior shin
L5
knee
L4
foot
L4, L5, S1
medial side of great toe (and medial malleolus)
L4
posterior and lateral surface of lower limbs
S1 (posterior), S2, L5 (lateral)
lateral margin of foot and little toe
S1
lateral portion of big toe and all toes but the little toe
L5
perineum (genitalia and anus)
S2, S3, S4