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Muscles of the arm and forelimb.  Deltoid muscle in humans  Action:  Abducts the shoulder  Origin:  Clavicle and scapula  Insertion:  Deltoid tuberosity.

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Presentation on theme: "Muscles of the arm and forelimb.  Deltoid muscle in humans  Action:  Abducts the shoulder  Origin:  Clavicle and scapula  Insertion:  Deltoid tuberosity."— Presentation transcript:

1 Muscles of the arm and forelimb

2  Deltoid muscle in humans  Action:  Abducts the shoulder  Origin:  Clavicle and scapula  Insertion:  Deltoid tuberosity of humerus

3  Action:  Flexion at the elbow  Origin: lateral epicondyle of the humerus  Insertion: Styloid process of the radius

4  Action:  Extension and abduction at wrist  Origin:  Distal lateral surface and lateral epicondyle of humerus  Insertion:  Bases of second and third metacarpal bones

5  Action:  Flexion at the finger joints and wrist  Origin:  Medial epicondyle of humerus, anterior surface of the radius and ulna, medial and posterior surface of ulna  Insertion:  Distal phalanges

6  Action:  pronation  Origin:  Medial epicondyle of humerus and coronoid process of ulna  Insertion:  Distal lateral surface of the radius

7  Action:  Flexion and abduction at wrist  Origin:  Medial epicondyle of humerus  Insertion:  Bases of second and third metacarpals

8  Action:  Flexion at wrist  Origin:  Medial epicondyle of humerus  Insertion:  Tendinous sheet on the palm (aponeurosis)

9  Action:  Flexion and adduction at the wrist  Origin:  Medial epicondyle of humerus  Insertion:  Pisiform, hamate and base of 5 th metacarpal

10  Action:  Extends the forelimb  Origin:  Latissimus dorsi  Insertion:  ulna

11  Action:  Extension at the elbow  Origin:  Superior, posterior and lateral margins of the humerus and scapula  Insertion:  Olecranon process of ulna

12  Action:  Flexion and supination at the shoulder  Origin:  Short head- corocoid process  Long head- supraglenoid tubercle  Insertion:  Tuberosity of the radius

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