OP review for CNS Flashcards
What are the Tendon reflexs that we must know?
Bicep, Tricep, Brachioradialis, Patellar, Ankle / Archilies, Jaw Jerk.
What spinal segment is involved in the Bicep DTR?
C5, C6.
What Spinal Segment is involved in the Tricep DTR?
…
What are Dermatome?
Dermatomes are an area of skin that is enervated by a certain pair of spinal nerves.
What area of the body is innervated by C2 as a dermatome?
The posterior skull ending at the SO’s then wrapping around anteriorly under the chin.
What area of the skin is supplied by C3 as a Dermatome?
The posterior neck - anterior neck ending around the SC joint.
What area of the skin is supplied by C4 as a Dermatome?
Posterior neck around the C7 spinal segment - to the shoulder by the Mid delt & some AC Joint.
What area of the skin is supplied by C5 as a Dermatome?
The lateral Half of the tricep - to the Lateral Bicep.
What area of the skin is supplied by C6 as a dermatome?
Starting at the elbow on the lateral half of the anterior and posterior forearm ranging to the thumb and pointer finger.
What area of the skin is supplied by C7 as a Dermatome?
on the posterior forearm in the middle ranging to the middle finger.
What area of the skin is supplied by C8 as a dermatome?
The medial part of the Forearm spanning to the ring and pinky finger.
What area of the skin is supplied by T4 as a Dermatome?
Starting around the inferior portion of the Scapula and ending around the Nips - and inferior portion of the Sternum.
What area of the skin is supplied by T1 as a dermatome?
Just under the collar bone spanning anteriorly down the medial half of the forearm.
What area of the skin does T2 supply as a dermatome?
Starting posteriorly around the superior portion of the Scapula - Spanning around anteriorly to the medial half of the bicep and the second rib level of the chest.
what area of the skin is supplied by T9 as a Dermatome?
Starting posteriorly around the level of the Elbow - Spanning anteriorly to the Belly button.
What area of the Skin is supplied by L1 as a Dermatome?
Posteriorly around the Superior portion of the PSIS - Spanning anteriorly to the pubic crest.
What area of the skin is supplied by L2 as a dermatome?
Starting on the posterior hip and spans all the way down the very lateral portion of the leg and a big part of the Anterior thigh just under the pubic crest and just above the Vastus lateralis.
What area of the skin is supplied by L3 as a dermatome?
Starting on the posterior thigh at the insertion of the medial hamstring - spanning anteriorly the the Vastus lateralis and just inferior to the patella.
What area of the skin is supplied by L5 as a dermatome?
The lateral / anterior leg - moving medial to the medial part of the foot.
What area of the skin is supplied by L4 as a Dermatome?
Starting in the medial portion of the leg spanning down to the heel.
What area of the skin is supplied by S2 as a dermatome?
starting just under the PSIS - spanning all the way down the medial part of the thigh and legs to right above the heel.
What area of the Skin is supplied by S1 as a dermatome?
Starting on the lateral part of the dorsal part of the foot and the lateral toe spanning to the entire bottom of the foot.
What is a Myotome?
This is a certain group of mm’s supplied by a single spinal nerve.
Why do we test Myatomes?
When testing we look for mm weakness of a particular group of mm’s.
What is the action for C1/C2?
Neck flexion and Extension.
What is the Action for C3?
Lateral Neck flexion.
What is the Action for C4?
Shoulder Elevation.