Quiz 6 - Shoulder Joint

How many degrees of freedom does the shoulder joint have?

3 degrees of freedom

Which muscles concentrically act to perform shoulder flexion?

Anterior deltoid, pectoralis majors, coracobrachialis, biceps brachii (long head)

Which type of joint is the glenohumeral joint (shoulder joint)?

Ball and socket

Which bony landmark on the humerus is the distal attachment for the deltoid muscle group?

Deltoid Tuberosity

What are the main causes of a rotator cuff tear?

Falling on an outstretched arm, repetitive overhead stress, bone spurs

Which two bones make up the shoulder joint?

Humerus and scapula

Which type of muscles are the rotator cuff muscles?

Internal: Subscapularis, Pectoralis Major, Lattisimus Dorsi External: Teres minor, Supraspinatus

What is the axis of the shoulder flexion/extension?

Mediolateral

Which muscle/s acts to adduct the shoulder?

Subscapularis, pectoralis major, lattisimus dorsi, teres major

Which anatomical term describes the supraspinatus in reference to the spine of the scapula?

Superior

Shoulder adduction occurs in the frontal plane T/F

True