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Coracobrachialis Muscle – Attachments, Action & Innervation

image descriptionCoracobrachialis Muscle

Coracobrachialis is one of the three muscles that comprise the anterior compartment of the arm. Its action is mainly antagonist to the action of the Deltoid.

An image showing some muscles attached to the upper limb (Detloid, Pectoralis major, Latissimus dorsi, Pectoralis major, Biceps brachii, Brachioradials)
An image showing some muscles attached to the upper limb (Detloid, Pectoralis major, Latissimus dorsi, Biceps brachii)
An image showing the Coracobrachialis Muscle attached to the upper limb along with other muscles (Subscapularis, Teres major, Triceps brachii, Biceps brachii)
An imagw showing the Coracobrachialis Muscle muscle attached to the upper limb
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image descriptionAttachments of Coracobrachialis Muscle: Origin & Insertion

Origin: (proximal attachments)
Coracoid process of scapula.

Insertion: (distal attachments)
Mid-medial surface of humerus.

An image showing some muscles attached to the upper limb (Detloid, Pectoralis major, Latissimus dorsi, Pectoralis major, Biceps brachii, Brachioradials)
An imagw showing the Coracobrachialis Muscle muscle attached to the upper limb
An image showing the origin and insertion of the Coracobrachialis Muscle on the upper limb
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Actions of Coracobrachialis Muscle:

image descriptionFlexes and image descriptionadducts arm at shoulder.

Innervation of Coracobrachialis Muscle:

a. Musculocutaneous nerve.
b. C5, C6, and C7.
An image showing the Musculocutaneous nerve coming out of the brachial plexus
An image showing the Musculocutaneous nerve coming out of the brachial plexus
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