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15 Cards in this Set
- Front
- Back
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Define Myotomes |
Designated motor areas based on spinal segment innervation. |
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What muscle does C2 innervate? |
Sternocleidomastoid |
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What level innervates the Levator Scapula? |
C3-C5 |
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What level innervates the trapezius? |
C3-C4 |
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What level innervates the diaphragm? |
C3-C5 |
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Axillary Nerve (Segment C5,C6): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - deltoid, teres minor Sensory Distribution - Lateral arm over lower portion of deltoid. Clinical Presentation - Loss of shoulder ABD, weak shoulder ER. |
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Musculocutaneous (Segment C5,C6): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Coracobrachialis, biceps brachialis Sensory Distribution - anterior lateral surface of forearm Clinical Presentation - loss of elbow flexion, weakened supination |
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Radial Nerve (Segment C6,C7,C8,T1): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Triceps, anconeus, brachioradialis, supinator; wrist, finger, and thumb extensors Sensory Distribution - posterior arm and forearm, radial side of posterior hand. Clinical Presentation - loss of elbow, wrist, finger, and thumb extension (wrist drop) |
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Median Nerve (Segment C6,C7,C8,T1): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Pronators, wrist and finger flexors on radial side, most thumb muscles. Sensory Distribution - palmar aspect of thumb, second, third, fourth fingers (radial half) Clinical Presentation - Loss of forearm pronation, loss of thumb opposition, flexion, and abduction; weakened wrist flexors, radial deviation, and third finger flexion. |
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Ulnar Nerve (Segment C8,T1): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Flexor carpi ulnaris, flexor digitorum profundus, interossei, fourth and fifth lumbricales Sensory Distribution - Fourth finger (medial portion), fifth finger Clinical Presentation - Loss of wrist ulnar deviation, weakened wrist and finger flexion, loss of thumb adduction, loss of most intrinsics |
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Femoral Nerve (Segment L2,L3,L4): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Iliopsoas, Sartorius, pectineus, quadriceps femoris Sensory Distribution - Anterior and medial thigh, medial leg, and foot Clinical Presentation - weakened hip flexion, loss of knee flexion |
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Obturator Nerve (L2,L3,L4): Muscle Innervation Sensory Distribution Clinical Presentation
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Muscle Innervation - Hip adductors, obturator externus Sensory Distribution - Middle part of medial thigh Clinical Presentation - loss of hip adduction, weak hip ER |
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Sciatic; Tibial & Peroneals (L4,L5,S1,S2,S3): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Hamstrings Sensory Distribution - NONE Clinical Presentation - Weakened hip EXT, loss of knee flexion |
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Tibial Nerve - medial & lateral plantar nerves (L4,L5,S1,S2,S3): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Popliteus, ankle plantar flexors, tibialisn posterior, foot intrinsics (medial and lateral plantar) Sensory Distribution - posterior lateral leg, lateral foot Clinical Presentation - loss of ankle plantar flexion, weakened ankle inversion, loss of toe flexion
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Common Peroneals -Superficial & Deep (L4,L5,S1,S2): Muscle Innervation Sensory Distribution Clinical Presentation |
Muscle Innervation - Peroneals, tibialis anterior, toe extensors Sensory Distribution - anterior lateral aspect of leg and foot Clinical Presentation - lo0ss of ankle dorsiflexion, loss of toe extension, loss of ankle eversion |
