Dermatomes Flashcards
Location: Anterior facial region
Muscles Facilitated: Mastication
Function: Ingestion
CN V
Location: Neck region
Muscles Facilitated: Sternocleidomastoid; upper trapezius
Function: Head control
C3
Location: Upper shoulder region
Muscles Facilitated: Trapezius (diaphragm)
Function: Head control
C4
Location: Lateral aspect of shoulder
Muscles Facilitated: Deltoid, biceps, rhomboid major and minor
Function: Elbow flexion
C5
Location: Thumb and radial forearm
Muscles Facilitated: ECR, biceps
Function: Shoulder abduction, wrist extension
C6
Location: Middle finger
Muscles Facilitated: Triceps, extensors of wrist and fingers
Function: Wrist flexion, finger extension
C7
Location: Little finger, ulnar forearm
Muscles Facilitated: Flexor of wrist and fingers
Function: C8 finger flexion
C8
Location: Axilla and proximal medical arm
Muscles Facilitated: Hand intrinsics
Function: Abduction and adduction of fingers
T1
Location: Thorax
Muscles Facilitated: Intercostals
Function: Respiration
T2-T12
Location: Nipple line
Muscles Facilitated: Intercostals
Function: Respiration
T4-T6
Location: Midchest region, lower rib
Muscles Facilitated: Abdominal wall, abdominal muscles
Function: T5-7 superficial abdominal reflex
T11
Location: Umbilicus
Muscles Facilitated: Psoas, iliacus
Function: Leg flexion
T10
Location: Inside of thigh
Muscles Facilitated: Cremasteric reflex, accessory muscles
Function: Elevation of scrotum
L1-2
Location: Proximal anterior thigh
Muscles Facilitated: Iliopsoas, adductors of thigh
Function: Reflex voiding
L2
Location: Anterior knee
Muscles Facilitated: Quadriceps, tibialis anterior, detrusor urinae
Function: Hip flexion, extensors of knee, abductors of thigh
L3-4
