coracobrachialis muscle

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cor·a·co·bra·chi·a·lis mus·cle

muscle of anterior (flexor) compartment of arm; origin, coracoid process of scapula; insertion, middle of medial border of humerus; action, adducts and flexes the arm; acts as a shunt muscle in resisting downward dislocation of shoulder joint; nerve supply, musculocutaneous.
Farlex Partner Medical Dictionary © Farlex 2012

cor·a·co·bra·chi·a·lis mus·cle

(kōr'ă-kō-brā-kē-ā'lis mŭs'ĕl) [TA]
Origin, coracoid process of scapula; insertion, middle of medial border of humerus; action, adducts and flexes the arm; resists downward dislocation of shoulder joint; nerve supply, musculocutaneous.
Synonym(s): musculus coracobrachialis [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


Giulio, Italian anatomist, 1556-1616.
Casser fontanel - the membranous interval on either side between the mastoid angle of the parietal bone, the petrous portion of the temporal bone, and the occipital bone. Synonym(s): mastoid fontanel
Casser perforated muscle - Synonym(s): coracobrachialis muscle
Medical Eponyms © Farlex 2012
References in periodicals archive ?
There have been numerous descriptions of muscular variations in the axillary region, in the axillary fossa or in the walls that form it, including Langer's axillary arch which is a muscle-fascial arch that originates in the lateral edge of the latissimus dorsi muscle and passes in front of the axillary vessels and nerves to join the fascia of the coracobrachialis muscle (Ortiz et al., 2009; Stanching, 2016).
Caption: Figure 6: Axial T1 MRI: (1) humerus, (2) deltoid muscle, (3) coracobrachialis muscle, (4) teres major muscle, and (5) triceps muscle.
(13) Protecting the coracobrachialis muscle during coracoid osteotomy and subsequent transfer can help prevent transient or permanent musculocutaneous nerve injury.
Musculocutaneous nerve arise in axilla from lateral cord of brachial plexus and passes downward & laterally, pierces the coracobrachialis muscle, then run downward between the biceps and the brachialis muscle, and further continues as the lateral cutaneous nerve of the forearm.
Usually coracobrachialis muscle arises from the apex of the coracoid process, together with the tendon of the short head of the biceps, and also by muscular fibres from the proximal 10 cm of this tendon.
The musculocutaneous nerve coursed laterally to supply the coracobrachialis muscle. The first lateral root is labeled as LR -1, which is indicated by a single arrow coursed medially towards the medial root of median nerve and joined with it in front of the third part of axillary artery.
Anesthesia of the forearm is incomplete unless the musculocutaneous nerve is also blocked, either at the antecubital fossa or the coracobrachialis muscle. (3) Anesthesia at the antecubital fossa is described in the section on elbow blocks.
AA--axillary artery, ACHA--anterior circumflex humeral artery, BA--brachial artery, CBM-- coracobrachialis muscle, CSA -circumflex scapular artery, IT--intermediate trunk, LT--lateral trunk, LTA- -lateral thoracic artery, MCN-- musculocutaneous nerve, MN--median nerve, MT -medial trunk, PB--pectoral branch, PCHA--posterior circumflex humeral artery, Pm-- pectoralis minor muscle, SBRA--superficial brachioradial artery, SSA--subscapular artery, TA-- thoracodorsal artery, UN--ulnar nerve.