Upper Extremity Nerves Flashcards
(22 cards)
What nerves make up the ROOTS of the Brachial Plexus and at what levels?
- Dorsal scapular (C4) C5
* Long thoracic C5, 6, 7
What nerves make up the UPPER TRUNK of the Brachial Plexus and at what levels?
- Subclavius C5, 6
* Suprascapular (C4) C5, 6
What nerves make up the LATERAL CORD of the Brachial Plexus and at what levels?
- Lateral pectoral C5, 6, 7
- Musculocutaneous C5, 6, 7
- Median (C5), C6, 7
What nerves make up the POSTERIOR CORD of the Brachial Plexus and at what levels?
- Upper subscapular C5, 6, (7)
- Thoracodorsal C6, 7, 8
- Lower subscapular C5, 6, (7)
- Axillary C5, 6
- Radial C5, 6, 7, 8 (T1)
What nerves make up the MEDIAL CORD of the Brachial Plexus and at what levels?
- Medial pectoral C7, 8, T1
- Median C8, T1
- Ulnar C8, T1
What muscle does the Long thoracic n innervate and at what levels?
*Serratus anterior (C5, 6, 7)
What muscle does the Subclavian n innervate and at what levels?
*Subclavius (C5, 6)
What muscle does the lateral pectoral n innervate and at what levels?
*pectoralis major: clavicular head (C5, 6)
What muscles does the Musculocutaneous n innervate and at what levels?
- Coracobrachialis (C5, 6, 7)
- Biceps Brachii (C5, 6)
- Brachialis (C5, 6)
What muscles does the Accessory n (Cranial Nerve XI) innervate?
- Sternocleidomastoid
* Trapezius
What muscles does Dorsal scapular n innervate and at what levels?
- Levator scapula (C5)
* Rhomboids (C4, 5)
What muscles does Suprascapular n innervate and at what levels?
- Supraspinatus (C4, 5, 6)
* Infraspinatus (C5, 6)
What muscle does Upper subscapular n innervate and at what levels?
*subscapularis (C5, 6, 7)
What muscles does Lower subscapular n innervate and at what levels?
- Subscapularis (C5, 6, 7)
* Teres major (C5, 6)
What muscle does Thoracodorsal n innervate and at what levels?
*Latissimus dorsi (C6, 7, 8)
What muscles does Axillary n innervate and at what levels?
- Deltoid (C5, 6)
* Teres minor (C5, 6)
What muscles does Radial n innervate and at what levels?
- Triceps brachii (C6, 7, 8)
- Brachioradialis (C5, 6, 7)
- Anconeus (C7, 8, T1)
- Extensor carpi radialis longus (C6, 7)
- Extensor carpi radialis brevis (C6, 7)
- Supinator (C7, 8)
- Extensor digitorum (C6, 7, 8)
- Extensor digiti minimi (C7, 8)
- Extensor carpi ulnaris (C7, 8)
- Abductor pollicis longs (C7, 8)
- Extensor pollicis brevis (C7, 8)
- Extensor pollicis longus (C7, 8)
- Extensor indicis (C7, 8)
What muscles does Medial pectoral n innervate and at what levels?
- Pectoralis major: sternocostal head (C7, 8, T1)
* Pectoralis minor (C8, T1)
What muscles does Median n (forearm) innervate and at what levels?
- Pronator teres (C6, 7)
- Flexor carpi radialis (C6, 7)
- Palmaris longs (C7, 8)
- Flexor digitorum superficialis (C7, 8, T1)
- Flexor digitorum profundus (radial 2 fingers) (C8, T1)
- Flexor pollicis longus (C8, T1)
- Pronator quadratus (C8, T1)
What muscles does Ulnar n (forearm) innervate and at what levels?
- Flexor carpi ulnaris (C7, 8)
* Flexor digitorum profundus (ulnar 2 fingers) (C8, T1)
What muscles does Median n (hand) innervate and at what levels?
- Abductor pollicis brevis (C8, T1)
- Opponens pollicis (C8, T1)
- Flexor pollicis brevis (superficial head) (C8, T1)
- 1st and 2nd lumbricals (C8, T1)
What muscles does Ulnar n (hand) innervate and at what levels?
- Adductor pollicis (C8, T1)
- Flexor pollicis brevis (deep head) (C8, T1)
- Abductor digiti minimi (C8, T1)
- Opponens digiti minimi (C8, T1)
- Flexor digiti minimi brevis (C8, T1)
- 3rd and 4th lumbricals (C8, T1)
- Dorsal interossei (all 4) (C8, T1)
- Palmar interossei (all 3) (C8, T1)
