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The attachment to the tendon of the moveable bone is the ____
insertion
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The attachment to the tendon of the stationary bone is the ____
origin.
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Origin is usually distal or proximal?
proximal.
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Insertion is usually distal or proximal?
distal.
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The pectoralis minor origin and insertion?
- Origin: 2-5th ribs, 3-5th, or 2-4th ribs
- Insertion: Medial border of coracoid process of scapula
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Which muscles is affected in winged scapula?
Serratus anterior.
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Name the muscles corresponding to the numbers.
- 1)levator scapulae
- 2)deltoid
- 3) infraspinatus
- 4)teres minor
- 5) teres major
- 6) levator scapulae
- 7) infraspinatus
- 8) teres major
- 9) supraspinatus
- 10)teres minor
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In punching or a "push-up" the shoulder is doing what action?
abduction (protraction) scapula moving laterally and anteriorally
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When pulling the oars of a boat, what actions is the scapula doing?
adduction (retraction) --> scapula moving medially and posteriorally
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When lifting a wt over the head, the scapula is doing what?
Elevation.
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When pulling down on a pulley, the scapula is doing what?
depression.
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What muscles attach to the medial (vertebral) border of the scapula, whose origins are in the cervical and thoracic vertebrae?
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What muscle originates in the superior 4 or 5 veebtrae and inserts at the superior vertebral border of the scapula?
- Levator scapulae
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What muscles are anterior to the subscapularis?
Serratus Anterior
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Where does the serratus anterior originate and insert?
- Origin: superior 8-9 ribs
- Insertion: Vertebral border & inferior angle of scapula.
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Where does the roator cuff muscles insert?
- SIT: greater tubercle of humerus
- Subscap: lesser tubercle of humerus
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What action does the subscapularis do when it contracts?
Medially roates arm at shoulder joint.
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Where does the rhomboid minor originate?
C7 and T1
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Where does the rhomboid major originate?
T2-T5
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How many muscles originate from the scapula. Name them.
7: Deltoid, SITS, Teres major, Coracobrachialis
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Which muscles is the "swimmer's muscle?"
Latissimus dorsi.
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Where does the deltoid insert?
Detloid tuberosity of humerus.
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How many heads does the deltoid have?
- 3:
- Anterior: originates in lateral 1/3 of clavicle
- Lateral: Originates in acromion
- Posterior: originates in spine of scapula
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Supraspinatus is deep to which other muscle?
Trapezius.
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What other muscle helps medially rotate the shoulder beside the subscapularis?
anterior fibers of the deltoid.
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What action does the supraspinatus do?
Abducting the arm.
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Which 3 muscles help laterally rotate the arm?
Posterior fibers of the deltoid, infraspinatus, teres minor.
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Which muscles help abduct the arm?
Supraspinatus and lateral fibers of deltoid
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