Title: Physeo Anki Decks / 01 - Anatomy / 08 Musculoskeletal Anatomy / Section 01 - Upper Trunk, Axillary, Musculocutaneous, Suprascapular Nerves
On every note of this deck, unless a note says otherwise:
Header: Identify the indicated structure(s)

Remarks: Motor:
Supraspinatus → shoulder abduction (0°-15°)
Infraspinatus → external rotation (Infection)
Sensation:
Shoulder (above axillary)

Remarks: Motor:
Biceps brachii → elbow flexion and forearm supination
Sensation:
Lateral forearm

Remarks: Motor:
Deltoid → shoulder abduction (>15°)
Sensation:
Shoulder

Remarks: Injury location:
Upper trunk damage
Presentation:
Arm at side
Internally rotated

Remarks: Injury location:
Surgical neck of humerus
Anterior dislocation
Upper trunk damage
Presentation:
Arm at side

Remarks: Injury location:
Upper trunk damage
Presentation:
Elbow extended
Pronated

Q: The [nerve] innervates the [what muscle], which helps with shoulder abduction (>15°)
A: axillary nerve; deltoid

Q: The [nerve] innervates the [muscle], which helps with elbow flexion and forearm supination
A: musculocutaneous nerve; biceps brachii

Q: The [nerve] innervates the [muscle], which helps with shoulder abduction (0°-15°) and [muscle], which helps with external rotation
A: suprascapular nerve; supraspinatus; Infraspinatus

Q: The [nerve] is responsible for the sensation of the [where]
A: axillary nerve; shoulder

Q: The [nerve] is responsible for the sensation of the [where]
A: musculocutaneous nerve; lateral forearm

Q: The [nerve] is responsible for the sensation of the [where]
A: suprascapular nerve; shoulder (above the axillary)

Q: The [upper or lower trunk] is responsible for the sensation of the [...] and [...]
A: upper trunk; shoulder; lateral arm

Q: An injury to the surgical neck of the humerus will damage the [nerve]
A: axillary nerve

Q: An anterior dislocation of the shoulder will damage the [nerve]
A: axillary nerve

Damage to the upper trunk will also affect the axillary nerve, musculocutaneous nerve, and the suprascapular nerve

Q: An injury to the [upper or lower trunk] can result from a traumatic neck-shoulder separation (fall or delivery)
A: upper trunk

Q: A lesion of the [nerve] will present with the arm at the side
A: axillary nerve

Q: A lesion of the [nerve] will present with the elbow [extended or flexed] and [pronated or supinated]
A: musculocutaneous nerve; extended; pronated

Q: A lesion of the [nerve] will present with the arm at the side and [internally or externally rotated]
A: suprascapular nerve; internally rotated

Extra 1: Makes up part of the the upper trunk (C5-C6)

Extra 1: Upper trunk (C5-C6 roots)
Motor:
Deltoid (axillary) → shoulder abduction (15°90°)
Supraspinatus (suprascapular) → shoulder abduction (0°-15°)
Infraspinatus → external rotation (Infection)
Biceps brachii → elbow flexion and supination
Sensory:
Shoulder
Lateral forearm