UE
Which cord segment and nerves innervate SCM, trapezius and other deep neck muscles?
What actions should be tested for these muscles?
Cord: C1-C4
Nerves C3-4 posterior rami, CN XI (spinal accessory)
Actions: cervical flexion, extension, neck rotation, lateral bending
Which cord segment and nerves innervate levator scapula?
What actions should be tested for this muscle?
Cord: C3-C4, C5
Nerves: cervical anterior rami, dorsal scapular
Action: Scapular elevation, downward rotation
Which cord segment and nerves innervate the deltoid?
What actions should be tested for this muscle?
Cord: C5-6
Nerve: axillary
Action: Shoulder abduction, flexion and extension
Which cord segment and nerves innervate interossei muscles of hand?
What actions should be tested for these muscles?
Cord: C8-T1
Nerve: ulnar (deep)
Action: 2nd-5th digit MCP flexion, adduction, abduction
Which cord segment, myotome and nerves innervate upper trapezius?
What actions should be tested for this muscle?
Cord: C3-4
Myotome: C4
Nerves: CN XI (spinal accessory)
Actions: shoulder shrug, scapular upward rotation
Which cord segment and nerves innervate rhomboids?
What actions should be tested for this muscle?
Cord: C4-5
Nerves: dorsal scapular
Action: scapular adduction, elevation and downward rotation
Which cord segment and nerves innervate Teres minor?
What actions should be tested for these muscles?
Cord: C5-6
Nerve: axillary
Actions: shoulder ER
Which cord segment and nerves innervate pronator teres and pronator quadratus?
What actions should be tested for these muscles?
Cord: C6-8
Nerve: median, anterior interosseous
Action: forearm pronation
Which cord segment and nerves innervate pec minor and major?
What actions should be tested for these muscles?
Cord: C5-8, T1
Nerves: Medial and lateral pectoral nerves
Action: shoulder horz adduction
Which cord segment and nerves innervate supraspinatus?
What actions should be tested for this muscle?
Cord: C5-6
Nerves: suprascapular nerve
Action: shoulder abduction
Which cord segment, myotome and nerves innervate biceps brachii?
What actions should be tested for this muscle?
Cord: C5
Myotome: C6
Nerves: musculocutaneous
Actions: elbow flexion, forearm supination
Which cord segment and nerves innervate lumbricals of the hand?
What actions should be tested for these muscles?
Cord: C8-T1
Nerves: median/ulnar
Action: 2-5th digit MCP flexion, IP extension
Which cord segment and nerves innervate JUST the pectoralis minor?
What actions should be tested for this muscle?
Cord: C8-T1
Nerves: medial pectoral nerve
Action: scapular downward rotation
Which cord segment and nerves innervate infraspinatus?
What actions should be tested for this muscle?
Cord: C5-6
Nerve: suprascapular
Action: shoulder ER
Which cord segment and nerves innervate coracobrachialis?
What actions should be tested for this muscle?
Cord: C5-7
Nerves: musculocutaneous
Action: shoulder flexion, adduction
Which cord segment, myotome and nerves innervate triceps brachii?
What actions should be tested for this muscle?
Cord: C6-C8
Myotome: C7
Nerve: Radial
Action: elbow extension
Which cord segment and nerves innervate serratus anterior?
What actions should be tested for these muscles?
Cord: C5-7
Nerves: Long thoracic nerve
Action: Shoulder protraction, scapular upward rotation
Which cord segment and nerves innervate latissimus dorsi, teres major, subscapularis and pec major?
What actions should be tested for these muscles?
Cord: C5-6
Nerves: thoracodorsal, upper/lower subscapularis and medial/lateral pectoral nerves
Actions: shoulder medial rotation and adduction
Which cord segment and nerves innervate brachialis and biceps brachii?
What actions should be tested for these muscles?
Cord: C5-6
Nerve: musculocutaneous
Action: elbow flexion
Which cord segment and nerves innervate brachioradialis?
What actions should be tested for this muscle?
Cord: C5-C6
Nerve: radial
Action: elbow flexion in mid supination/pronation