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20 Cards in this Set
- Front
- Back
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Trapezius
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Ori: occipital bone, spinous processes of thoracic vertebrae
Ins: Clavicle and scapula (acromion and scapular spine) Act: Upper-elevation, middle-retraction, lower-depression Inn: Accessory nerve XI, c3-c4 nerve |
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Rhomboid major
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Ori: spinous processes of superior thoracic vertebrae
Ins: vertebral border of scapula from spine to inferior angle Act:adducts scapula and performs downward rotation Inn:dorsal scapular nerve |
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Rhomboid minor
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Ori:spinious processes of vertebrae c7-t1
Ins:vertebral border of scapula near spine Act: adducts scapula and performs downward rotation Inn: dorsal scapula nerve |
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Levator scapulae
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Ori: transverse process of first four cervical vertebrae
Ins: vertebral border of scapula near superior angle Act: elevates scapula Inn: cervical nerves c3-c4, dorsal scapula nerve |
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Teres major
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Ori: inferior angle of scapula
Ins: intertubercular groove of humerus Act: extension, adduction and medial rotation of shoulder Inn: lower subscapular nerve c5-c6 |
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Teres minor
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Ori: lateral border of scapula
Ins: greater tubercle of humerus Act: leteral rotation at shoulder Inn: axillary nerve c5 |
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Subscapularis
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Ori: subscapular fossa of scapula
Ins: lesser tubercle of humerus Act: medial rotation at shoulder Inn:subscapular nerves c5-c6 |
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Infraspinatus
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Ori: infraspinous fossa of scapula
Ins:greater tubercle of humerous Act: lateral rotation at shoulder Inn: supra scapular nerve c5-c6 |
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Supraspinatus
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Ori: supraspinous fossa of scapula
Ins: greater tubercle of humerus Act: abduction at the shoulder Inn: suprascapula nerve c5 |
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Serratus anterior
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Ori: anterior and superior margins of ribs 1-8
Ins: anterior surface of vertebral border of scapula Act: protracts shoulder, rotates scapula moving glenoid cavity superiorly Inn: long thoracic nerve c5-c7 |
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Pectoralis major
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Ori: cartilage of ribs 2-6, body of sternum, inferior medial portion of clavicle
Ins: crest of greater tubercle and lateral lip of intertubercular groove of humerus Act: flexion, aduction and medial rotation at shoulder Inn: pectorial nerves c5-t1 |
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Pectoralis minor
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Ori: anterior superior surface of ribs 3-5
Ins: coracoid process of scapula Act: depresses and protracts shoulder, elevates ribs if scapula is stationary, downward rotation of glenoid process Inn:medial pectorial nerve |
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Deltoid
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Ori: clavicle and scapula (acromion and adjacent scapular spine)
Ins:deltoid tuberosity of humerus Act: whole muscle- sbduction at shoulder, anterior- flexion and medial rotation, prosterior- extension and lateral rotation Inn: axillary nerve c5-c6 |
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Coracobrachialis
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Ori: coracoid process
Ins: medial margin of shaft of humerus Act: adduction and flexion at shoulder Inn: musculocutaneous nerve c5-c7 |
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Biceps brachii
short head and long head |
Ori: scapula..short head- coracoid process, long head- supraglenoid tubercle
Ins: tuberosity of radius Act: flexion at elbow and shoulder, supination Inn: musculocutaneous nerve c3-c6 |
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Brachialis
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Ori: anterior, distal surface of humerus
Ins: tuberosity of ulna Act:flexion at elbow Inn: musculocutaneous nerve c5-c6 and radial nerve c7-c8 |
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Brachiorradialis
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Ori: ridge superior to lateral epicondyle of the humerus
Ins: lateral aspect of styloid process of radius Act: flexion at elbow Inn: radial nerve c5-c6 |
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Triceps brachii
Long, lateral and medial head |
Ori: long- infraglenoid tubercle of scapula, lateral- superior lateral margin of of humerous, medial- prosterior surface of humerous inferior to radial groove
Ins:olecranon of ulna Act:lateral and medial- extension at elbow, long- extension at elbow plus adduction at shoulder Inn: radial nerve c6-c8 |
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Pronator teres
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Ori:medial epicondyle of humerus and coronoid process of ulna
Ins:midlateral surface of radius Act: pronation Inn: median nerve c6-c7 |
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Supinator
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Ori: lateral epicondyle of humerus, ridge near radial notch of ulna
Ins: anterolateral surface of radius distal to radial tuberosity Act: supination Inn: deep radial nerve c6-c8 |
