Physician Assistant (PA)
Anatomy & Embryology
Dermatomes - Lumbosacral

Master Dermatomes - Lumbosacral with Picmonic for Physician Assistant

With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing.

Dermatomes - Lumbosacral

Recommended Picmonics

picmonic thumbnail
Dermatomes - Cervical

Dermatomes - Lumbosacral

Mr. Skin Divisions with Lumber-sack
The skin's surface is divided into specific areas called dermatomes, which are mainly supplied by a single spinal nerve. There are 8 cervical nerves (C1 being an exception with no dermatome), 12 thoracic nerves, 5 lumbar nerves and 5 sacral nerves. Each of these nerves relays sensation (and pain) from a particular region of skin to the brain.
L2 - Medial Thigh
(L) Lion in (2) Tutu with Metal Thigh

Lumbar spinal nerve L2 correlates with dermatome distribution over the medial thigh.

L3 - Medial Knee
(L) Lion at (3) Tree with Metal Knee

The dermatome L3 correlates with distribution over the thigh with clinical significance over the medial knee.

L4 - Kneecap, Medial Ankle, and Big Toe
(L) Lion (4) Fork with Knee, Metal Ankle, and Big Toe

Lumbar spinal nerve 4, L4, is characteristically distributed over the kneecap, medial ankle, and big toe.

L5 - Dorsum of Foot
(L) Lion (5) Hand hitting Dorsum of Foot

The dorsum of the foot correlates to the distribution of L5 sensory innervation.

S1 - Lateral Foot, Posteriolateral Thigh
(S) Snake with (1) Wand at Ladder Foot and Post-ladder Thigh

Sacral spinal nerve 1, S1, innervates sensory pathways in the lateral foot and posteriolateral thigh.

S 2, 3, 4, 5 - Perianal and Genitals
(S) Snake in (2) Tutu with 3,4, and 5 coiling around Pear-with-a-hole and Genital-gentleman

Sacral spinal nerves 2-5 correlate with the perianal area and the genitals.


Take the Dermatomes - Lumbosacral Quiz

Picmonic's rapid review multiple-choice quiz allows you to assess your knowledge.

It's worth every penny

Our Story Mnemonics Increase Mastery and Retention

Memorize facts with phonetic mnemonics

Unforgettable characters with concise but impactful videos (2-4 min each)

Memorize facts with phonetic mnemonics

Ace Your Physician Assistant (PA) Classes & Exams with Picmonic:

Over 1,890,000 students use Picmonic’s picture mnemonics to improve knowledge, retention, and exam performance.

Choose the #1 Physician Assistant (PA) student study app.

Picmonic for Physician Assistant (PA) covers information that is relevant to your entire Physician Assistant (PA) education. Whether you’re studying for your classes or getting ready to conquer the PANCE® or PANRE®, we’re here to help.

Works better than traditional Physician Assistant (PA) flashcards.

Research shows that students who use Picmonic see a 331% improvement in memory retention and a 50% improvement in test scores.