Upper Extremity: Shoulder Girdle Flashcards
Outline the bones of the right shoulder girdle
Outline the joints of the shoulder girdle
note: the scapulothoracic joint is Not a normal articulation between bones because the the anterior border of the scapula and the exit earl border of the ribs have muscle on it.
Why is the scapulothoracic joint not a normal articulation
Not a normal articulation between bones because the the anterior border of the scapula and the exit earl border of the ribs have muscle on it.
The posterior muscular sling is made up of ___ (attaches the vertebrae to the spine of the scapula), the __, and the ___ scapula (runs for vertebrae to medial margin of the scapula. It’s basically the same as the rhomboids except is runs from the cervical vertebrae rather than the thoracic (where the rhomboids connect), and lats Doris (runs from thorax directly to humerus).
The posterior muscular sling is made up of traps (attaches the vertebrae to the spine of the scapula), the rhomboids, and the lelevator scapula (runs for vertebrae to medial margin of the scapula. It’s basically the same as the rhomboids except is runs from the cervical vertebrae rather than the thoracic (where the rhomboids connect), and lats Doris (runs from thorax directly to humerus).
ANTERIOR SLING:
The __ __ runs from thorax to humerus, it also __ rotates and __ the humerus and also stabilized pectoral girdle
- pec minor runs from __ to the __ process of scapula.
- __ anterior runs from the inner medial margin of scapula to the first through ninth ribs.
ANTERIOR SLING:
The pectoralis major runs from thorax to humerus, it also internal rotates and abducts the humerus and also stabilized pectoral girdle
- pec minor runs from costa to the coracoid process of scapula.
- Serratus anterior runs from the inner medial margin of scapula to the first through ninth ribs.
After removal of pec major, the pec __ and ___ anterior can be seen.
After removal of pec major, the pec minor and serratus anterior can be seen.
traps have accessory innervation __ (11). All other muscles of the pectoral girdle have interaction running from ___ nerve.
Lat Dorsi gets attached from the __ crest and ___ (T7)
traps have accessory nerve CRANIAL (11). All other muscles of the pectoral girdle have interaction running from SEGMENTAL nerve.
Lat Dorsi gets attachment from the lilac crest and thorax (T7)
Anterior muscles of the pectoral girdle, which lie on the anterior and lateral thoracic wall,
• include the __, ___ minor, and ___ anterior and • are anchored to the ribs, as well as to the bones of the pectoral girdle.
Anterior muscles of the pectoral girdle, which lie on the anterior and lateral thoracic wall,
• include the subclavius, pectoralis minor, and serratus anterior and • are anchored to the ribs, as well as to the bones of the pectoral girdle.
Posterior muscles of the pectoral girdle, which are part of the superficial muscular layer of the back,
- include the __, __ __, __ ___, and ___ ___
- arise from ___ and thoracic vertebrae and insert on the ___.
Posterior muscles of the pectoral girdle, which are part of the superficial muscular layer of the back,
- include the trapezius, levator scapulae, rhomboid major, and rhomboid minor
- arise from cervical and thoracic vertebrae and insert on the scapula.
muscles involved in pectoral girdle elevation
Trapezius (descending part) Levator scapulae
muscles involved in pectoral girdle depression
Pectoralis minor Trapezius (ascending part)
muscles involved in pectoral girdle protraction and retraction
muscles involved in pectoral girdle lateral and medial rotation
The serratus anterior is innervated by the ___ ____ nerve, ( (posterior components of C__, __, ___ ventral rami))
long thoacic nerve. (posterior components of C5, 6, 7 ventral rami)
A musculotendinous rotator cuff around the glenohumeral joint includes four of the scapulohumeral muscles, which are the important ___ stabilizers of the joint. Outline the muscles
DYNAMIC STABILIZERS
Enterior shoulder region muscles
- pectoralis major
- pectoralis minor
- serratus anterior
OIF of pectoralis major
O: medial 1/2 of clavicul, maubrium, and sternurm, corstal cartilages of ribs 2-6.
i; greater rubercle of humeurs
F; adduction and medial rotationi at GH joint; draws scapula anteriorly
OIF of pextoralis minor
O; rib 3-5
I; coracoid process of scapula
F; inferior rotation and protraction of scapula
OIF of serratus anteiror
O; lateral margin of upper ribs
I; medial border of scapula on anterior side
F; protraction of scapula
extrinsic posterior shoulder muscle/axioappendicular muscles
- trapezius
- latissimus dorsi
- rhomboid (minor or major)
- levator scapulae
OIF of trapezius
O; spinous processes of cervical and thoracic vertebrae and occipital bone
I;clavicle, acromion, and spine of scapula.
F; elevation, depression, retraction of scapular, assist rotation of scapula
OIF of latissumus dorsi
O; spinous processes of lower thoracic and lumbar vertebrae
I; bicipital groove of humerus
F; extension, adducition, medial rotaton at glenohumeral joint
OIF of rhomboids
o; spinous processes of C7 and upper thoacic vertebrae
I; medial border of scapula
f; inferior rotation and retraction of scapula
OIF of levator scapulae
o; cervical vertebrae
o; upper medial border of scapula
f; elevation of scapula.
– Posterior muscles of the pectoral girdle, which are part of the superficial muscular layer of the back,
- include the __, ___ scapulae, __ major, and ___ minor
- arise from cervical and thoracic vertebrae and insert on the scapula.
– Posterior muscles of the pectoral girdle, which are part of the superficial muscular layer of the back,
• include the trapezius, levator scapulae, rhomboid major, and rhomboid minor and
• arise from cervical and thoracic vertebrae and insert on the scapula.
muscles of the intrinsic posterior axioappendicular region
- deltoid
- teres major
- supraspinatus (RC)
- infraspinatus (RC)
- terres minor (RC)
- subscapularis (RC)
OIF of deltoid
O; clavicle, acromion, and spine of scapula
I; deltoid tuberosity of humurus
F; flexion, medial rotaion, abduction, lateral rotation at GH joint.
OIF of teres major
O; inferior angle of scapula (posterior side)
I: lesser tubercle of humerus
F: stabilization of GH joint. extension, adduction, medial rotation at GH joint.
what is subluxation
• Subluxation is when it isn’t fully popped out/ the bone of the joint isn’t fully dislocated.
deltoid is supplied by the ___ nerfve
axillary nerve
