STRUCTURAL AND FUNCTIONAL ORGANIZATION OF THE UPPER EXTREMITY MUSCULOSKELETAL SYSTEM

Question 1

What are the regions of the vertebral column?

Answer 1

Cervical-7
Thoracic-12
Lumbar-5
Sacrum-5 fused
Coccyx-4 fused

Question 2

What are the four normal curves that help increase strength?

Answer 2

Lordotic-Cervical & Thoracic

Kyphotic- Throracic & Sacral

Question 3

What vertebra are the strongest?

Answer 3

Lumbar

Question 4

What are the four bones of the thorax?

Answer 4

• Sternum
• Manubrium
• Body
• Xyphoid process

Question 5

What bones make up the pectoral girdle?

Answer 5

• Clavicle
• Scapula
• Acromion
• Coracoid

Question 6

What bone articulates with the sternum medially, with the acromion laterally, and is the strut between the scapula and the sternum?

Answer 6

Clavicle

Question 7

What is attached to the scapula and forms the “tip of the shoulder”?

Answer 7

Acromion

Question 8

What are the muscled of the rotator cuff?

Answer 8

SITS Muscles

• Supraspinatus
• Infraspinatus
• Teres Minor
• Subscapularis

Question 9

What muscle assists the deltoid in abduction of the humorous at the shoulder?

Answer 9

Supraspinatus

Question 10

What muscle causes external rotation of the humorous at the shoulder joint?

Answer 10

Infraspinatus

Question 11

What muscle extends arm bath shoulder and rotation of the arm externally?

Answer 11

Teres minor

Question 12

What muscle causes internal rotation of the arm at the shoulder?

Answer 12

Subscapularis