Shoulder and Arm

Question 1

[Clavice] Sternal end

Answer 1

end towards the sternum.

Question 2

[Clavice] Sternoclavicular joint (SC)

Answer 2

Articulation between the sternal end of the clavicle and the sternum. (joint that keeps your arm on)

Question 3

[Clavice] Acrominal end

Answer 3

raised bump at the end of the clavicle (bumps go down)

Question 4

[Clavice] Acromioclavicular joint (AC)

Answer 4

small articulation between the acromion of the scapula and the acromial end of the clavicle. (diving board and bump)

Question 5

[Clavice] Conoid tubercle

Answer 5

a bony prominence on the inferior surface of the lateral third of the clavicle.

Question 6

[Clavice] Trapeziod line

Answer 6

inferior surface of lateral end of the clavicle: attachment site for the trapezoid ligament

Question 7

Clavicle

Answer 7

lies horiziontally across the chest and has a gentle “S” shape.
Attachment site for a number of muscles.
the lateral end in relatively flat and often rises slightly higher that the acromion.
The medial end is round and articulates with the sternum.

Question 8

Labrum

Answer 8

fibrocartilage that runs around the cavity of the scapula (wingbone) in which the head of the humerus (the bone in the upper arm) fits.

Question 9

Deltoid - Actions

Answer 9

All Fibers: ABDUCT the shoulder
Anterior Fibers: Flex the shoulder (G/H joint)
Horizontally ADDUCT the shoulder (G/H) joint)
Posterior fibers: EXTEND the shoulder (G/H joint)
Laterally ROTATE the shoulder (G/H joint)
Horizontally ABDUCT the shoulder (G/H joint)

Question 10

Deltoid - Origin

Answer 10

Lateral 1/3 of calvicle, acromion and spine of the scapula

Question 11

Deltoid - Innervation

Answer 11

Deltoid tuberosity

Question 12

Deltoid - Nerve

Answer 12

Axillary

Question 13

Trapezius- Origin

Answer 13

External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae and spinus processes of C-7 to T-12

Question 14

Trapezius- Action

Answer 14

Upper fibers: Bilaterally- Extend the head and neck
Unilaterally - Laterally flex the Head and neck to the opposite side
Elevate the scapula (scapulothoracic joint)
Upwardly rotate the scapula (S/C joint)
Middle fibers: Adduct the scapula (S/T joint)
Stabilize the scapula (S/T joint)

Question 15

Trapezius- Intervation

Answer 15

Lateral 1/3 of the clavicle, acromion and spine of the scapula

Question 16

Trapezius- Nerve

Answer 16

Spinal portion of carnial nerve XI (Accessory and ventral ramus)

Question 17

Latissimus Dorsi - Action

Answer 17

Extends the shoulder(G/H joint)
Adduct the shoulder (G/H joint)
Medially rotate the shoulder (G/H joint)

Question 18

Latissimus Dorsi - Origin

Answer 18

Inferior angle of scapula, spinous processes of last six thoracic vertebrate, last three or four ribs, thoracolumbar aponeurosis and posterior ilias crest

Question 19

Latissimus Dorsi- Innervation

Answer 19

Crest of lesser tubercle lateral side (intertubercular groove of the humerus)

Question 20

Latissimus Dorsi - Nerve

Answer 20

Thoracodorsal