The Shoulder and Arm

Question 1

This is the primary joint of the shoulder, located btw the head of the humerus and the glenoid cavity of the scapula. It is extremely mobile and far less stable than the hip.

Answer 1

Glenohumeral joint

Question 2

8 movements of the scapula

Answer 2

depression, abduction, forward tilt, upward rotation, elevation, adduction, return from forward tilt, downward rotation

Question 3

orignates on the anterior surface of the scapula and inserts on the lesser tubercle of the humerus. It reinforces the capsule of the glenohumeral joint.

Answer 3

Subscapularis

Question 4

originates from the supraspinous fosse on the posteior side of the scapula. Its tendon passes under the acromioclavicular joint and inserts on the greater tubercle.

Answer 4

Supraspinatus

Question 5

Movement and Primary muscles used for motion of the glenohumeral joint:
Abduction

Answer 5

deltoid

Question 6

Movement and Primary muscles used for motion of the glenohumeral joint:
Lateral Rotation

Answer 6

Teres Minor

Question 7

Movement and Primary muscles used for motion of the glenohumeral joint:
Adduction

Answer 7

Lattisimus Dorsi

Question 8

Movement and Primary muscles used for motion of the glenohumeral joint:
Extension

Answer 8

Posterior deltoid

Question 9

Has two origins. The short head originates at the coracoid process and the long head originates from a tubercule above the glenoid cavity. It inserts on the radial tuberosity and the bicipital aponeurosis of the medial forearm. It is primarily a flexor and supinator of the forearm.

Answer 9

Biceps Brachi

Question 10

means broadest muscle of the back. it originates from T7 to the sacrum and it inserts on the bicipital ridge of the humerus. by wrapping around the lower trunk it helps preserve structural integrity especially in movements requiring strength. It is one of the primary lifting muscles of the back.

Answer 10

Latissimus Dorsi

Question 11

Describe the motions of the glenohumeral joint during first por tu dras

Answer 11

Flexion: First position
Adduction: Second position
Abduction: Fifth (low)