Which Dermatome Innervates the posterior thigh and leg?

Which Dermatome Innervates the posterior thigh and leg?

More videos on YouTube

Nerve Root Dermatomes
L5 Buttock, posterior and lateral thigh, lateral aspect of leg, dorsum of foot, medial half of sole, first, second, and third toes
S1 Buttock, thigh, and leg posterior

What Dermatome is the heel?

Among these key points, the medial malleolus is designated as the L4 dermatome, the dorsum of the foot at the third metatarsal phalangeal joint is designated as the L5 dermatome and the lateral heel (calcaneus) is designated as the S1 dermatome.

Which spinal nerve Innervates the skin at the level of umbilicus based on the Dermatome map?


Spinal Component Skin Distribution
T10 dermatome Level of the umbilicus
T12 dermatome Just above the hip girdle
Remaining thoracic spinal nerve dermatomes Relatively evenly distributed between the above-mentioned thoracic dermatomes
L1 dermatome The hip girdle and the groin/inguinal area

Which nerve is the largest and longest in the body?

The sciatic nerve is the largest and longest nerve in the human body, originating at the base of the spine and running along the back of each leg into the foot. At its thickest point, it is about as wide as an adult thumb.

What is Myotome and dermatome?

A group of muscles that is innervated by the motor fibers that stem from a specific nerve root is called a myotome. An area of the skin that is innervated by the sensory fibers that stem from a specific nerve root is called a dermatome. This consistency allows doctors to treat nerve pain in patients.

What does dermatome give rise to?

Dermatome. The dermatome is the dorsal portion of the paraxial mesoderm somite which gives rise to the skin (dermis).

What are the dermatomes of the lower leg?

Dermatomes of the lower limb are defined as the areas of the skin on the lower leg supplied by a single spinal nerve (afferent nerve fiber). Spinal nerves are a part of the peripheral nervous system (PNS).

Where does the L5 dermatome cross the knee?

the medial aspect of the foot and the great toe L5 dermatome Posterolateral thigh (just inferior to L4 dermatome) and wraps around to lateral aspect of the anterior lower leg and dorsum of the foot; it crosses the knee joint on the lateral aspect of the knee; also covers the plantar aspect of the foot and the second through fourth toes

Where does the dorsalis pedis artery enter the foot?

The dorsalis pedis artery supplies the tarsal bones and the dorsal aspect of the metatarsals. Via the deep plantar arch, it also contributes to the supply of the toes. The posterior tibial artery enters the sole of the foot through the tarsal tunnel. It then splits into the lateral and medial plantar arteries.

Where are the dermatomes located on the body?

The virus inflames the spinal nerve along a particular skin dermatome. Symptoms of shingles include pain, redness, rash on the skin that occur along the specific dermatome on one side of the body either left or right. In lower limb dermatomes are distributed on the thighs, knees, legs, and the foot on both side anteriorly as well as posteriorly.