Pectoral Gridle

Question 1

What does the pectoral girdle connect?

Answer 1

Upper limb and axial skeleton

Question 2

What serves as a rigid support from which the scapula and upper limb are suspended?

Answer 2

Clavicle

Question 3

What are the 3 synovial joints that exist in the pectorial girdle?

Answer 3

1) Sternoclavicular - Sternum
2) Acromioclavicular- lateral side of clavicle
3) Shoulder (glenohumeral)- Humerus

Question 4

What muscles protract the scapula?

Answer 4

Pectoralis Minor
Pectoralis Major
Serratus Anterior

Question 5

What muscles retract the scapula?

Answer 5

Trapezius

Rhomboids

Question 6

What do the upper, middle and lower fibres in the trapizius do?

Answer 6

Upper- elevate
Middle- retract
Lower- depress

Question 7

What does the term C5-T1 mean and what runs from above this?

Answer 7

fifth cervical vertebra, first thoracic vertebra

The brachial plexus

Question 8

What is the brachial plexus?

Answer 8

Arrangement of nerve fibres