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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Supraspinatus m.
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Origin: entire surface of the suprasinous fossa
insertion: greater tuberosity of the humerus action: protracts the humerus EXTENDS SHOULDER Innervation: |
Deep EXTENSOR
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Infraspinatus m.
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Origin: surface of the infraspinous fossa
insertion: lateral surface of the greater tuberosity of the humerus action: rotates humerus laterally FLEXES SHOULDER JOINT Innervation: |
Deep FLEXOR
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Teres major m.
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thick triangular muscle occupying the axillary border of the scapula
Origin: dorsal third of the axillary border insertion: common tendon with the latissimus dorsi onto the medial surface of the shaft of the proximal end of the humerus action: flexes and rotates the humerus medially Innervation: |
Deep
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Levator scapulae ventralis
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Band like muscle whose cranial end emerges from beneath the clavotrapezius and a part of which can be seen lying between the clavotrapezius and acromiotrapezius
Origin: by two heads from the ventral surface of the transverse process of the atlas and from the basioccipital near the tympanic bulla Action: pulls scapula cranial Innervation: |
Superficial
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Acromiodeltoid m.
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Flat muscle positioned ventral to the levator scapulae ventralis and caudal to clavobrachialis
Origin: acromion of the scapula Insertion: Surface of the spinodeltoid muscle Action: Flexes the humerus and rotates it laterally Innervation: |
superficial
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Spinodeltoid m.
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Lies ventral to the acromiotrapezius and levator scapulae ventralis and caudal to the acromiodeltoid.
Origin: spine of the scapula Insertion: deltoid ridge of the humerus Action: synergistic action with the acromiodeltoid in flexing the humerus and rotating it outward Innervation: |
Superficial
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Teres minor m.
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small triangular muscle located between the infraspinatus and long head of the triceps brachii and beneath the spinodeltoid.
origin: axillary border of the scapula near the glenoid fossa Insertion: greater tuberosity of the humerus Action: synergistic action with the infraspinatus in rotating the humerus laterally. Innervation: |
Deep
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Subscapularis m.
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Large medial triangular muscle located in the subscapular fossa.
Origin: almost entire subscapular fossa Insertion: dorsal border of lesser tuberosity of the humerus Action: adducts the humerus Innervation: |
Deep
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Coracobrachialis m.
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short bandlike muscle that lies on the medial aspect of the shoulder joint in close proximity to the insertion of the subscapularis and the origin of the biceps brachii
Origin: coracoid process of the scapula Insertion: proximal end of humerus Action: adducts the humerus Innervation: |
Deep
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Epitrochlearis m.
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delicate flat muscle appears on the medial surface of brachium an dpartially overlies the triceps brachii
Origin: lateral boder of latissimus dorsi Insertion: thin aponeurosis and continuous with the antebrachial fascia onto the olecranon process of the ulna Action: extending the antebrachium Innervation: |
Superficial
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Biceps brachii m.
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Thick muscle lying on the cranial surface of the humerus
Origin: a tendon above the glenoid fossa of the scapula SUPRAGLENOID TUBERCLE OF SCAPULA Insertion: by a tendon on the radial tuberosity PROXIMAL RADIUS AND ULNA Action: flexes the forearm, tends to supinate the manus and stabilizes the shoulder joint. FLEXES ELBOW, EXTEND SHOULDER Innervation: |
deep FLEXOR
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Triceps brachii m.
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large lateral muscle consisting of three heads that orginate from separate sites but with common insertion
Origin lateral head - deltoid ridge of proximal end of humerus Origin long head - near glenoid fossa of axillary border of scapula Origin medial head - consists of three parts all of which originate from the humerus Insertion: common strong tendon onto surface of olecranon process of ulna OLECRANON PROCESS OF ULNA Action: extend forearm EXTENDS ELBOW Innervation: |
superficial FLEXOR
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Anconeus m.
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small triangular muscle covers lateral surface of elbow.
Origin: dorsal surface of the lateral epicondyle Insertion: Lateral surface of the ulna Action: extends forearm with triceps brachii Innervation: |
superficial
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Brachialis m.
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lateral muscle located along cranial surface of humerus and lies partially obscured by lateral head of triceps brachii
Origin: PROXIMAL lateral surface of the shaft of the humerus Insertion: lateral surface of the ulna near semilunar notch Action: flexes the forearm or antebrachium and is synergistic with biceps brachii FLEXES ELBOW Innervation: |
superficial
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