Posterior Arm Flashcards by Ella Knight | Brainscape

Q

What muscle makes up the posterior arm?

A

Triceps brachii

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Q

Which nerve innervates the posterior arm?

A

Radial nerve

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Q

What are the parts of triceps brachii?

A

Long head
Lateral head
Medial head

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Q

What is the origin of triceps brachii?

A

Long head - infraglenoid tubercle

Lateral head - humerus - superior to radial groove

Medial head - humerus - inferior to radial groove

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Q

What is the insertion of triceps brachii?

A

Tendon -> olecrannon

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Q

What is the action of triceps brachii?

A

Extend arm

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Q

What is the innervation of triceps brachii?

A

Radial nerve

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