Unit 3 Arm Flashcards by brooke desrosiers | Brainscape

Q

Humerus Head Articulation

A

Glenohumeral joint

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Q

Humerus Necks

A

Anatomical
Surgical

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Q

Anatomical Neck

A

Epiphyseal plate of long bone

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Q

Common Break Site

A

Surgical neck

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Q

Humerus Shaft Components

A

Greater & lesser tubercle
Intertubercular sulcus

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Q

Elbow Articulation

A

Capitulum
Trochlea

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Q

Flexor/Anterior Compartment

A

Innervated by musculocutaneous

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Q

Extensor/Posterior Compartment

A

Innervated by radial

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Q

Arm Flexor Muscles

A

Biceps brachii
Coracobrachialis
Brachialis

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Q

Flexor Muscle Innervation

A

Shoulder
Elbow

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Q

Biceps Brachii Attachment

A

Distal to elbow
Tendon attaches to radius
Aponeurosis attaches to ulnar

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Q

Biceps Brachii Function

A

Pronation

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Q

Aponeurosis Function

A

Weak flexion of forearm
Flexion of elbow
Protect cubital fossa

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Q

Coracobrachialis

A

Shoulder flexor

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Q

Brachialis

A

Elbow flexor

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Q

Musculocutaneous Innervation

A

Biceps
Coracobrachialis
Brachialis

Q

Radial Innervation

A

Brachialis

Q

Rupture of Bicep (Long Head)

A

Tendon torn/avulsed
Pulled off supraglenoid tubule (glenohumeral joint)
Not surgical
Muscle will atrophy

Q

Musculocutaneous Nerve Pathway

A

Anterior to humerus
Pierces coracobrachialis

Q

Musculocutaneous Injury Function Implications

A

Loss of shoulder flexion
Loss of forearm supination
Loss of elbow flexion

Q

Extensor/Posterior Muscles

A

Triceps (long, medial, lateral heads)

Q

Long Head of Triceps Function

A

Arm extension
Crosses shoulder joint

Q

All Tricep Heads Function

A

Forearm Extension

Q

Radial Nerve Innervation

A

All tricep heads

Q

Humeral Shaft Fracture Young People

A

High energy trauma

Q

Humeral Shaft Fracture Old People

A

Osteopenia

Q

Humeral Shaft Fracture Risks

A

Radial nerve at radial groove
Radial nerve palsy
Reduced risk extension
Radial deviation
Reduced elbow flexion

Q

Radial Nerve Pathway

A

Posterior to humerus
Under lateral head of triceps
Along radial groove

Q

Axilla Boarders

A

Anteriorly pectoralis major & minor
Medially, serratus anterior & thoracic
Posteriorly, subscapularis, teres minor & latissimus dorsi
Laterally, intertubercular sulcus