Pectoral Girdle Joints and Muscles

Question 1

Sternoclavicular Joint

Answer 1

Articulating Bones: sternum and clavicle
Joint type: gliding
Movement: small sliding movements, slight rotation, and circumduction

Question 2

Acromioclavicular Joint

Answer 2

Articulating bones: scapula/clavicle
Joint Type: gliding
Movement: gliding

Question 3

Glenohumeral Joint

Answer 3

Articulating bones: scapula/ head of the humerus
Joint Type: ball and socket
Movement: all combinations of movements, including rotation

Question 4

Subclavius

Answer 4

Under the clavicle on the anterior side

Action: depresses and protracts fiddle by attaching to clavicle

Question 5

Pectoralis Minor

Answer 5

Deep to the pectoralis major

Action: depresses and protracts scapula, downward/medial rotation of scapula

Question 6

Trapezius

Answer 6

kite like muscle posterior (has 4 parts)

Action: elevates, depresses, adducts/retract, lateral/upward rotation of scapula, elevates clavicle

Question 7

Serratus Anterior

Answer 7

sawtooth origin on ribs
Action: protracts scapula, lateral/upward rotation of scapula
(boxer punch)

Question 8

Levator Scapulae

Answer 8

from cervical vertebrae to vertebral border of scapula near superior angle
Action: elevates scapula

Question 9

Rhomboid Major/Minor

Answer 9

there is a major and minor from spinous process of superior thoracic vertebrae to vertebral border of scapula
Action: adducts scapula, medial/downward rotation of scapula