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where does the scapula attach
the scapula attaches to the axial skeleton
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Orgin of the rhomboideus major
the spinous processes of t-2 thru t-5
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the insertio rhomboideus major
the lower half of the medial margin of the scapula
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function of rhomboideus major
adducts, downwordly rotates the scapula
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how to stretch rhomboideus major
aduct and upwordly rotate the scapula
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rhomboideus major also know as
the christmas tree muscle
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orgin of rhomboideus minor
spinous processes c-7 thru t1
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insertion of rhomboideus minor
medial margin of the scapula
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function of rhomboideus minor
adducts the scapula
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rhomboideus minor also know as
the christmas tree muscle
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structur and relationship of rhomboideus minor
splenius cervicis is immediatly deep
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orgin of levator scapula
transverse processes of c-1 thur c-4
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insertion of levator scapulae
superior angle of the scapula
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function of levator scapulae
elevates the scapula
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structure and relationship of levator scapulae
- deep to traps
- doesnt touch the ribs
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orgin ot the trap s muscle
- base of the skull (occipital protuberance)
- spinious process c-7 thru c-12
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insertion of the traps
spin of the scapula, acromion, lateral 1/3 of clavical
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function of the traps muscle
- extends the head
- elevates, upwordly rotates, and depresses the scapula
- adducts the scapula
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structure and relationship of the trap muscles
most superficial muscle of the back
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orgin of serratus anterior
the first 8 or 9 anterior ribs
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insertion of serratus anterior
the medial margin of the scapula
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function of serratus anterior
abduct, upwordly rotated the scapula
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structure and function os serratus anterior
- found between the scapula and ribs
- forms the medial wall of the axilla (armpit)
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orgin of pectoralis minor
ribs 3-5
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insertion of pectoralis minor
the coracoid process of the scapula
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function of pectoralis minor
abducts, downwordly rotates the scapula
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structure and relationship of pectoralis minor
- involved in forced breathing
- the what up muscle
- found on the anterior of the thorax
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orgin of subclavius
the first rib
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insertion of subclavius
inferior clavical
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function of subclavius
downwordly rotates the clavical
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sturcture and relationship of subclavius
found immediatly inferior to the clavical
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(Rotator cuff muscles) orgin of supraspinatus
supraspinous fossa
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(Rotator cuff muscles) insertion of supraspinatus
greater tubercle
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(Rotator cuff muscles) function of supraspinatus
abducts the shoulder
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(Rotator cuff muscles) sturcture and rlatonship of supraspnatus
superior to the spin of the scapula
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(Rotator cuff muscles) orgin of infraspinatus
Infraspininous fossa
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(Rotator cuff muscles) Insertion of infraspinatus
Grater tubercle
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(Rotator cuff muscles) Function of infraspinatus
laterally rotates the shoulder of the humerus
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(Rotator cuff muscles) structure and relationship of infraspinatus
inferior to the spine of the scapula
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(Rotator cuff muscles) orgin of teres minor
lateral margin of the scapula
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(Rotator cuff muscles) insertion of teres minor
greater tubercle
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(Rotator cuff muscles) function of teres minor
lateral rotation of the shoulder of the humerus
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(Rotator cuff muscles) structre aand relationship of teres minor
inferior to the spine of the scapula
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(Rotator cuff muscles) orgin of subcapularis
subscapular fossa
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(Rotator cuff muscles) insertion of subcapularis
lesser tubercle of humerus
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(Rotator cuff muscles) function of subcapularis
medial rotation of the shoulder
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(Rotator cuff muscles) structure and relationship of subcapularis
- passes between the scapula ans serratus anterior
- to stretch- laterally rotate the shoulder
- serratus anterior is anterior to it
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rotator cuff muscles
- all attach to the scapula and the humerus
- share a coomn attachment on the greater tubercle of the humerus
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Orgin of deltoid
lateral 1/3 of clavicle acromion and spine of the scapula
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insertion of the deltoid
deltoid tuberocity
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function of the deltoid
abducts, flexes, extends, medial and lateral mover the shoulder
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structure and relationship of the deltoid
the orgin of the deltoid matched the insertion of the traps
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Orgin of pectoralis major
clavicle, sternum and ribs
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insertion of pectoralis major
Intertubercular groove
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function of pectoralis major
adduction and medial rotates the shoulder
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structure and relationship of pectoralis major
- doesnt attach to the scapula
- to stretch- abduct and latarally rotate the shoulder
- found on the anterior wall of the axillary space(armpit)
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orgin of teres major
inferior angle of the scapula
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Insertion of teres major
Intertuburcle groove
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Structure and relationship of Teres major
The little Lat
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Orgin of Latissimus dorsi
Spinous process of t-7 thru L-5, sacrum, illium (thoracolumbar apernueroisis)
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Insertion of Latissimus Dorsi
Intertuburcle groove
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Function of Latissimus dorsi
- Adduction and medial rotation of the shoulder
- extensor of a flexed shoulder
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Intertubercular groove
- all share a common insertion of the intubercular groove of the humerus
- all are powerful adductors and medial rotators of the humerus
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Orgin of coracobrachialis
coracoid process of the scapula
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Insertion of coracobrachialis
Medial shaft of the humerus
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Function of coracobrachialis
Flextion of the shoulder
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structure and relationship of coracobrachialis
- to stretch extend shoulder
- only brachial muscle that crossesd the shoulder
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Orgin of brachialis
distal 1/2 of the anterior humerus
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insertion of brachialis
coranoid process of the ulna
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function of brachialis
flexes the elbow
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sturcture and relationship of brachialis
- deep to the biceps brachii
- only crosses the elbow joint
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Biceps brachii
- fully activated when supinated
- the 3rdc muscle that attaches to the coricoid process of the scapula
- lies anterior to the coracobrachial and brachialis
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orgin of biceps brachii
coracoid process of the scapula and suerglenoid tubercle
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Insertion of the biceps brachii
radial tuberosity
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Function of biceps brachii
flexes the elbow, supinates forearm and flexes the shoulder
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structure and relationship of the biceps brachii
- crosses 3 shoulder joints ( the humoral, ulna & radial ulna)
- doesnt attach(skips) the humerous
- most anterior bracial muscle
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orgin of triceps brachii
- 1.) head infraglenoid tubercle
- 2.) head posterior surface of the humerous
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insertion of triceps brachii
olecranon process
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function of triceps brachii
extend the elbow and extends the shoulder
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structure and relationship of triceps brachii
- only posterior brachial muscle
- to stretch - flex the elbow and flex the shoulder
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Antebrachial compartment muscles
some muscles pass thru the carpal tunnel
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