Myotomes, Dermatones, and Reflex Testing Flashcards
Myotomes-Cervical Flexion
C1-C2
Myotomes- Shoulder elevation
C3-4
Myotomes- Shoulder abduction
C5
Myotomes- Cervical Side Flexion
C3
Myotomes- Scapular Elevation
C4
Myotomes- Elbow Flexion and wrist Extension
C6
Myotomes- Elbow Extension and wrist flexion
C7
Myotomes- Thumb extension
C8
Myotomes- Finger Abduction
T1
Myotomes- Hip Flexion
L1-L2
Myotomes- Knee extension
L3
Myotomes- Ankle dorsiflexion
L4
Myotomes- Big toe extension
L5
Myotomes- Knee flexion
S2
Myotomes- Ankle eversion, plantarflexion, hip extension
S1
Dermatomes- Vertex of Skull
C1
Dermatomes- Posterior head, temple and forehead
C2
Dermatomes-Entire neck, posterior cheek, temporal area, posterior-lateral neck
C3
Dermatomes- Acromioclavicular joint, clavicular area, and upper scpaular area
C4
Dermatomes-Lateral Arm to base of the thumb
C5
Dermatomes-Anterior arm, radial side of hand to thumb and index finger
C6
Dermatomes- Lateral arm and forearm to index, long, and ring finger
C7
Dermatomes-Back, over trochanter and groin
L1
Dermatomes- Medial arm and forearm to long, ring, and little finger
C8
Dermatomes-Medial side of forearm to base of little finger
T1
Dermatomes-Middle third of anterior thigh
L3
Dermatomes- Back, front of thigh to knee
L2
Dermatomes-Patella and medial Malleolus, big toe
L4
Dermatomes-Lateral and plantar aspect of foot, posterior leg
S1
Dermatomes- Medial aspect of posterior thigh
S2
Dermatomes- Fibular head and dorsum of foot, first, second, and third toes
L5
Dermatomes- Perianal area
S3-5
Reflex-Biceps
C5-6
Reflex-Brachioradialis
C6
Reflex- Triceps
C7
Reflex- Patellar
L2-L4
Reflex-Achilles Tendon
S1
Dermatomes
area of skin suppled by a SINGLE nerve root. Its area is larger than area innervated by peripheral nerve
Myotomes
group of muscle innervated by singel spinal nerve root. Help determine if there is damage to the spinal cord and at what level
Hyporeflexive
lower motor neuron injury
Hyperreflexia
Upper motor neuron injury