muscles upper arm

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Author:
felixhorst
ID:
311179
Filename:
muscles upper arm
Updated:
2015-11-09 09:05:00
Tags:
muscles upper arm anatomy
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Description:
muscles +origin+insertions+innervations of arm
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  1. Muscles of the arm?
    • Anterior (flexor group)
    • M.biceps brachii
    • M. coracobrachialis 
    • M. brachialis

    • Posterior(extensor group)
    • M. triceps brachii
    • M. anconeus
  2. Biceps brachii
    Origin?
    Insertion?
    Function?
    innervation?
    • O: Caput longum: scapula- Tuberculum supragleonidale,Caput breve: Scapula- processus coracoideus 
    • I: Radius Tuberositas radii/ antebrachial fossa via bicipital aponeurosis 
    • F: at the shoulder joint:Abduction of the arm (caput longum)
    • adduction and ventral flexion of the arm (caput breve)
    • At the elbow joint: supination of the pronated forearm, flexion (only when the forearm is supinated)
    • N. musculocutaneus
  3. M. coracobrachialis
    Origin?
    Insertion?
    Function?
    innervation?
    • O: scapula- Processus coracoideus 
    • I: Humerus- Facies anterior 
    • F: Ventral flexion, returns the arm to the middle 'basic' position
    • N: N. Muculocuntaneus
  4. M. Brachialis 
    Origin?
    Insertion?
    Function?
    innervation?
    • O: Humerus- facies anterior 
    • I: Ulna- Tuberositas ulnae 
    • F: Flexion of the forearm 
    • N: N. muculocutaneus
  5. M. Triceps Brachii
    Origin?
    Insertion?
    Function?
    innervation?
    • O: Caput longum: Scapula- Tuberculum infragleonidale 
    • Caput Laterale: Proximal to sulcus nervis radialis  
    • Caput mediale: Distal to the Sulcus nervi radialis

    I: Ulna- Olecranon 

    F: Whole arme: Extension of the forearm, Caput longum: Adduction of the extended arm 

    N: N. Radialis
  6. M. anconeus 
    Origin?
    Insertion?
    Function?
    innervation?
    • O: Lateral epicondyle, lig. collaterale radiale- Humerus 
    • I: Ulna- proximal to the olecranon 
    • F: accessory extender of the forearm, stretches the articular capsule of the elbow and prevents therefore prevents its constriction 
    • N: N. radialis

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