Upper Extremity: Shoulder Girdle

Question 1

Outline the bones of the right shoulder girdle

Answer 1

Question 2

Outline the joints of the shoulder girdle

Answer 2

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.

Question 3

Why is the scapulothoracic joint not a normal articulation

Answer 3

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.

Question 4

Answer 4

Question 5

Answer 5

Question 6

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).

Answer 6

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).

Question 7

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.

Answer 7

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.

Question 8

Answer 8

Question 9

After removal of pec major, the pec __ and ___ anterior can be seen.

Answer 9

After removal of pec major, the pec minor and serratus anterior can be seen.

Question 10

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)

Answer 10

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)

Question 11

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.

Answer 11

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.

Question 12

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 ___.

Answer 12

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.

Question 13

muscles involved in pectoral girdle elevation

Answer 13

Trapezius (descending part) Levator scapulae

Question 14

muscles involved in pectoral girdle depression

Answer 14

Pectoralis minor Trapezius (ascending part)

Question 15

muscles involved in pectoral girdle protraction and retraction

Answer 15

Question 16

muscles involved in pectoral girdle lateral and medial rotation

Answer 16

Question 17

The serratus anterior is innervated by the ___ ____ nerve, ( (posterior components of C__, __, ___ ventral rami))

Answer 17

long thoacic nerve. (posterior components of C5, 6, 7 ventral rami)

Question 18

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

Answer 18

DYNAMIC STABILIZERS

Question 19

Enterior shoulder region muscles

Answer 19

1. pectoralis major
2. pectoralis minor
3. serratus anterior

Question 20

OIF of pectoralis major

Answer 20

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

Question 21

OIF of pextoralis minor

Answer 21

O; rib 3-5

I; coracoid process of scapula

F; inferior rotation and protraction of scapula

Question 22

OIF of serratus anteiror

Answer 22

O; lateral margin of upper ribs

I; medial border of scapula on anterior side

F; protraction of scapula

Question 23

extrinsic posterior shoulder muscle/axioappendicular muscles

Answer 23

1. trapezius
2. latissimus dorsi
3. rhomboid (minor or major)
4. levator scapulae

Question 24

OIF of trapezius

Answer 24

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

Question 25

OIF of latissumus dorsi

Answer 25

O; spinous processes of lower thoracic and lumbar vertebrae

I; bicipital groove of humerus

F; extension, adducition, medial rotaton at glenohumeral joint

Question 26

OIF of rhomboids

Answer 26

o; spinous processes of C7 and upper thoacic vertebrae

I; medial border of scapula

f; inferior rotation and retraction of scapula

Question 27

OIF of levator scapulae

Answer 27

o; cervical vertebrae

o; upper medial border of scapula

f; elevation of scapula.

Question 28

– 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.

Answer 28

– 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.

Question 29

muscles of the intrinsic posterior axioappendicular region

Answer 29

1. deltoid
2. teres major
3. supraspinatus (RC)
4. infraspinatus (RC)
5. terres minor (RC)
6. subscapularis (RC)

Question 30

OIF of deltoid

Answer 30

O; clavicle, acromion, and spine of scapula

I; deltoid tuberosity of humurus

F; flexion, medial rotaion, abduction, lateral rotation at GH joint.

Question 31

OIF of teres major

Answer 31

O; inferior angle of scapula (posterior side)

I: lesser tubercle of humerus

F: stabilization of GH joint. extension, adduction, medial rotation at GH joint.

Question 33

what is subluxation

Answer 33

• Subluxation is when it isn’t fully popped out/ the bone of the joint isn’t fully dislocated.

Question 34

deltoid is supplied by the ___ nerfve

Answer 34

axillary nerve