Science Quiz / Upper Extremity Muscle Nerves & Functions

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Can you name the Upper Extremity Muscle Nerves & Functions?

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Function and NerveMuscle
N: radial nerve (posterior interosseus branch / C7, C8) Fxn: extension and adduction at the wrist
N: suprascapular nerve (C5-C6) Fxn: shoulder stabilizer, lateral rotator
N: lower subscapular nerve (C6-C7) Fxn: Medial rotator, adductor, and assists in humeral extension
N: radial nerve (C7, C8) Fxn: extension at elbow, abducts the ulna during pronation
N: radial nerve (posterior interosseus branch / C7, C8) Fxn: extension of distal IP joint of the thumb
N: median nerve (C6, C7) Fxn: wrist flexion
N: musculocutaneous nerve (C5-C6) Fxn: primary flexor of the elbow
N: radial nerve (deep branch/C5, C6) Fxn: supination by rotating the radius
N: musculocutaneous nerve (C5-C6) Fxn: flexor/supinator, weak shoulder flexer
N: median nerve (interosseus branch/C7, C8, T1) Fxn: flexion of distal IP joint of thumb
N: median nerve (C8, T1) and ulnar nerve Fxn: flexion of distal IP joints
N: medial pectoral nerve (C8-T1) Fxn: draws scapular forward, down and medial
N: radial nerve (posterior interosseus branch / C7, C8) Fxn: extension of distal IP joint of 2nd digit
N: median nerve (anterior interosseus branch / C8, T1) Fxn: initiates pronation
N: upper and lower subscapular nerves (C5-C6) Fxn: shoulder stabilizer, medial rotator
N: radial nerve (posterior interosseus branch / C7, C8) Fxn: lateral rotation, abduction, and extension of 1st digit
Function and NerveMuscle
N: radial nerve (C5, C6) Fxn: assists with flexion at the elbow
N: musculocutaneous nerve (C6-C7) Fxn: flexor and adductor of the humerus
N: axillary nerve (C5-C6) Fxn: primarily abduction (also medial and lateral rotation)
N: axillary nerve (C5-C6) Fxn: lateral rotator and weak adductor (also a shoulder stabilizer)
N: medial and lateral pectoral nerves (C5-C8, T1) Fxn: adduction of arm
N: radial nerve (deep branch / C7, C8) Fxn: extends and abducts the wrist
N: radial nerve (posterior interosseus branch / C7, C8) Fxn: extension of 1st digit at MCP joint
N: radial nerve (C7, C8) Fxn: extension at elbow, extension of the arm
N: suprascapular nerve (C5-C6) Fxn: initiator of abduction, shoulder stabilizer, lateral rotator
N: median nerve (C6, C7) Fxn: wrist flexion and radial deviation
N: ulnar nerve (C7, C8) Fxn: wrist flexion and ulnar deviation
N: radial nerve (posterior interosseus branch / C7, C8) Fxn: extension of MCP and IP joints
N: radial nerve (C6, C7) Fxn: extends and abducts the wrist
N: radial nerve (posterior interosseus brach / C7, C8) Fxn: extends the 5th digit at MCP and IP joints
N: median nerve (C6, C7) Fxn: pronation and radial rotation
N: median nerve (C7, C8, T1) Fxn: flexion of proximal IP joints, assists in wrist flexion

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