Muscle
Coracobrachialis
Pierced by musculocutaneous nerve
High-yield
Musculocutaneous nerve pierces coracobrachialis - a reliable landmark.
Overview
A slender muscle of the anterior arm that flexes and adducts the arm and is pierced by the musculocutaneous nerve.
Reference facts
- Origin
- Apex of the coracoid process of the scapula
- Insertion
- Middle of the medial surface of the humeral shaft
- Action
- Flexes and adducts the arm at the shoulder
- Innervation
- Musculocutaneous nerve (C5, C6, C7)
- Blood supply
- Muscular branches of the brachial artery
Frequently asked questions
What does the coracobrachialis do?
The coracobrachialis flexes and adducts the arm at the shoulder.
What nerve innervates the coracobrachialis?
The coracobrachialis is innervated by the musculocutaneous nerve (C5, C6, C7).
Where does the coracobrachialis attach?
The coracobrachialis originates from the apex of the coracoid process of the scapula and inserts on the middle of the medial surface of the humeral shaft.
What is the blood supply of the coracobrachialis?
The coracobrachialis is supplied by the muscular branches of the brachial artery.