Scapula

Question 1

What type of joint is acromioclavicular joint

Answer 1

Plane

Question 2

What type of synovial joint is sternoclavicular joint

Answer 2

Saddle

Question 3

The first 30 degrees of abduction of arm is caused by?

Answer 3

Muscles acting at shoulder joint (glena-humeral joint)

Question 4

Beyond 30 degrees arm abduction relies on scapula being pulled upwards (elevated) and laterally rotating on chest wall. What is this called?

Answer 4

Scapula-Humeral Rhythm

Question 5

For every 3 degrees of abduction past the initial 30 degrees - 2 degrees occurs where?

Answer 5

Gleno-humeral Joint

Question 6

For every 3 degrees of abduction past the initial 30 degrees, 1 degree occurs due to?

Answer 6

Scapula Thoracic Movement

Question 7

Main muscles involved in elevation of arm? (3)

Answer 7

Trapezius, Rhomboid and Levator Scapulae

Question 8

Main muscles involved n depression of arm (5)

Answer 8

Trapezius, Pectoralis Minor, Subclavius, Serratus Anterior, Lat Dorsi

Question 9

What muscles involved in protraction (forward movement) of arm? (2)

Answer 9

Serrates Anterior, Pectoralis Major and Minor

Question 10

Which muscles involved in retraction of arm

Answer 10

Trapezius and Rhomboids

Question 11

Which muscles involved in Lateral Rotation of arm? (shrugging shoulders)

Answer 11

Trapezius and Serrates Anterior

Question 12

Which muscles involved in medial downward rotation of arm

Answer 12

Gravity, Levator Scapulae, Rhomboid Major and Minor