Dermatomes & Myotomes Flashcards
1
Q
Dermatome
A
area of skin innervated by the nerve fibers of a single spinal nerve –>sensory
2
Q
Mytome
A
Group of muscles that a single spinal nerve innervates –>motor
3
Q
Shoulder (Dermatome)
A
C5
4
Q
Thumb (Derm)
A
C6
5
Q
Middle finger (D)
A
C7
6
Q
Little finger (D)
A
C8
7
Q
Nipple (Derm)
A
T4
8
Q
Umbilicus (D)
A
T10
9
Q
Groin (D)
A
L1
10
Q
Medial foot (D)
A
L5
11
Q
Lateral leg/foot (Derm)
A
S1
12
Q
Anal area (D)
A
S2,3, 4
13
Q
C-5 (mytome)
A
Upper extremity abductors
deltoid, biceps brachii
14
Q
C-5/6 (Mytome)
A
Forearm flexors (biceps brachii, brachioradialis) forearm pronators
15
Q
C-7 (M)
A
Forearm extensor (triceps brachii)
Wrist extensors
Finger extensors
16
Q
C-8/T1 (myotome)
A
Intrinsic hand muscles
17
Q
L-2 (myotome)
A
Thigh flexion (iliopsoas)
18
Q
L-3/4 (M)
A
Leg extension (quadriceps) (knee jerk reflex)
19
Q
L-4/5 (M)
A
Foot dorsiflexors
toe extensors
20
Q
S-1/2 (M)
A
Foot plantar flexors Toe flexors (achilles tendon reflex)
21
Q
S-2,3,4 (M)
A
Anal contraction
