Upper Extremeries

Question 1

Glenohumeral ligament

Answer 1

Anterior side between Glenoid cavity of scapula and head of humerus.

Shoulder stability, has three parts inferior superior and medial

Question 2

Coracoclavicular ligament

Answer 2

Between clavical and corocoid process if scapula.

Helps with movement if pectoral girdle

Question 3

Coracoacromial ligament

Answer 3

Between corocoid process and acromion. Strong triangular band.

Stabilizes superior humeral head

Question 4

Subscapularus

Answer 4

O: Subscapular fossa of scapula

I: lesser tubercle of humerus and central part of capsule of shoulder joint

A: medially rotates and stabilizes head of humerus in Glenoid cavity

Question 5

Infraspinatus

Answer 5

O: infraspinous fossa of scapula

I: mid part of the greater tubercle of humerus and capsule of shoulder

A: lateral rotation and stabilizer of humeral head in Glenoid cavity.
Abducts the humerus

Question 6

Teres minor

Answer 6

O: upper 2/3 of dorsal surface of auxiliary border of scapula

I: capsule of shoulder joint and inferior part of greater tubercle of humerus

A: laterally rotates the arm draws humerus towards Glenoid cavity

Question 7

Supraspinatus

Answer 7

O: supraspinous fossa of scapula

I: superior part of greater tubercle and capsule of shoulder joint

A: abducts the arm and acts to stabilize the humeral head in the Glenoid cavity

Question 8

Deltoid anterior fibers

Answer 8

O: superior surface of lateral 1/3 clavical

I: deltoid Tuberosity

A: flexion and medial rotation of the arm

Question 9

Deltoid medial fibers

Answer 9

O: lateral border of acromion process of scapula

I: deltoid Tuberosity

A: abducts the arm

Question 10

Deltoid posterior fibers

Answer 10

O: lower border of the crest of spine of the scapula

I: deltoid Tuberosity

A: extends the arm , laterally rotates