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48 Cards in this Set
- Front
- Back
The clavicular instersection is part of the ___(a)______ (muscle) & separates _____(b)______ & ____(c)______. What's the relationship between (b) & (c) with respect to positioning? |
Brachiocephalicus, Cleidocephalicus, Cleidobrachialis. Cleidocephalicus is proximal to cleidobrachialis. |
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Action of Trapezius m. |
To elevate and abduct the limb at the shoulder |
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Origin of Trapezius m |
Median fibrous rapha of neck and supraspinatus ligament |
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Insertion of Trapezius m |
Spine of the scapula |
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There are two parts of the trapezius. What are they called, where are they in relation to each other and what separates them? |
pars cervicalis (cranial) & pars thoracis (caudal). Separated by aponeurosis. |
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Action of Omotransversarius m. |
To advance the limb and flex the neck laterally |
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Origin of omotransversarius m |
The transverse process (wing) of the atlas (C1)
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Insertion of omotransversarius m |
Distal spine of scapula |
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"omo" = ? |
shoulder |
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the omotransversarius covers ________. |
the superficial cervical lymph node |
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Name the three heads of triceps brachii m. |
caput longum (long head), caput laterale (lateral head), capute mediale (medial head). |
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Action of caput longum m. |
To extend the elbow and flex the shoulder |
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Origin in caput longum m. |
Caudal border of scapula |
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Insertion of caput longum m. |
Olecranon tuber of ulna |
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Action of caput laterale m. |
To extend the elbow |
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Origin of caput laterale m. |
Tricipital line of the humerus |
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Insertion of caput lateral m. |
Olecranon tuber of ulna |
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Action of caput mediale m. |
To extend the elbow |
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Origin of caput mediale m. |
the crest of the lesser tubercle of humerus, near teres major tuberosity |
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Insertion of caput mediale m. |
Olecranon of the ulna |
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Action of cleidobrachialis m. |
Advance the limb. Extend the shoulder. Draw head and neck to the side. |
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Origin of cleidobrachialis m. |
Clavicular Intersection |
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Insertion of cleidobrachialis m. |
Distal end of the cranial aspect of the humerus. |
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What are the two parts of the cleidocephalicus? |
pars cervicalis & pars mastoidea |
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Action of cleidocephlicus m. |
Advance the limb, extend the shoulder, draw head and neck to the side. |
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Origin of cleidocephalicus |
pars cervicalis - clavicular intersetion pars mastoidea - clavicular insertion |
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Insertion of cleidocephlicus |
pars cervicalis - dorsal midline of the neck pars mastoidea - mastoid process of temporal bone |
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Action of Latissimus Dorsi |
To draw the limb caudally and flex the shoulder |
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Origin of Latissimus Dorsi |
Thoracolumbar fascia from spinous processes of lumbar vertebrae & last 2-3 ribs |
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Insertion of Latissimus Dorsi |
Teres major tuberosity of humerus via the teres major tendon. *The tendon of this muscle joins with the teres major tendon* |
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Action of Serratus Ventralis m. |
Support trunk and depress scapula |
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Origin of Serratus Ventralis m. |
Ribs & transverse processes of cervical vertebrae |
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Insertion of Serratus Ventralis m. |
Serrated face of scapula |
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"Flying scapula" occurs in what species? What is the cause? |
Ruminants & horses; myopathy and/or damage to the serratus ventralis result in the dorsal border of the scapula rising above the whithers. Support of the forelimb is lost. |
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Action of Deltoideus m. |
To flex the shoulder joint |
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Name the two parts of the deltoideus AND species variations. |
pars scapularis & pars acromialis. **species lacking an acromion do not have a divided deltoideus m. (i.e. HORSE) |
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Origin of deltoideus m. |
The spine & acromial process of scapula |
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Insertion of detoideus m. |
Deltoid tuberosity of humerus |
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Action of the infrapsinatus m. |
Laterally stabilize the shoulder. To prevent medial rotation when weight-bearing. Abduct and laterally rotate the shoulder. |
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Origin of infraspinatus m. |
infraspinatus fossa of scapula |
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Insertion of infraspinatus m. |
A small, circumscribed area of the lateral side of the greater tubercle of the humerus |
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Action of the supraspinatus |
To extend and laterally stabilize the shoulder |
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Origin of the supraspinatus |
The supraspinatus fossa of the scapula |
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Insertion of the supraspinatus |
The greater tubercle of the humerus |
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Action of the subscapularis |
To medially stabilize the shoulder, prevents lateral rotation when weight-bearing. Adduct shoulder. Extend shoulder. |
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Action of sternocephalicus |
To draw head and neck to the side |
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Origin of sternocephalicus |
Manubrium |
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Insertion of sternocephalicus |
pars occipitalis - nuchal crest in occipital bone pars mastoidea - mastoid process of the temporal bone |