Week 2 Nero

C2 Dermatome

Posterior aspect of head

C3 Dermatome

Posterior aspect of neck

C4 Dermatome

AC joint

C5 Dermatome

Lateral Arm, (and clavicles)

C6 Dermatome

Lateral forearm and palmar tip of thumb

C7 Dermatome

Palmar distal phalanx of middle finger

C8 Dermatome

Palmar distal phalanx of little finger

T1 Dermatome

Medial elbow

T4 Dermatome

Level of Nipples

T5 Dermatome

Level of nipples

T10 Dermatome

Level of Umbilicus

L1 Dermatome

Inguinal Ligament

L2 Dermatome

Lateral Thigh

L3 Dermatome

medial knee

L4 Dermatome

medial malleolus

L5 Dermatome

Lateral leg and Dorsum of foot

S1 Dermatome

Lateral foot, heel

S2 Dermatome

popliteal fossa

S3 Dermatome

ischial tuberosity

S4 Dermatome

Perineum

dorsal column-medial lemniscal pathway sensations

Light touch, conscious proprioception

spinothalamic tract sensations

Crude touch, pain, temperature

DC-ML pathway

Peripheral nerve,
dorsal root ganglion,
ipsilateral nucleus cuneatus or gracilis, Contralateral Medial Lemniscus (pons),
Contralateral VPL of thalamus, contralateral primary somatosensory cortex

spinothalamic pathway

Dorsal root ganglion, dorsal horn of spinal cord, anterior commisure, contralateral VPL of thalamus, contralateral somatosensory cortex

Free nerve endings

respond to course touch, pain and temperature

Meissner's corpuscles

light touch, low vibration

Pacinian corpuscles

respond to deep pressure and high vibration

Merkel's disks

Texture, shape, edges

Ruffini endings

respond to stretch

T2 Dermatome

medial upper arm/axilla

L3 Reflex Test

strike patellar tendon

S1 Reflex Test

Test achilles’ tendon

C7 Reflex test

Triceps tendon