Trapezius

Question 1

Origin or Trap

Answer 1

• External occipital protuberance
• Medial part of the superior nuchal line
• Nuchal ligament (EOP-c7)
• Spinous process (c7-t12)
• Supraspinous ligaments (c7-t12)

Question 2

Insertion of trap

Answer 2

• Upper 3rd: posterior inner surface of the lateral aspect of the clavicle
• Middle 3rd: acromion process
• Lower 3rd: spine of scapula

Question 3

Upper 3rd trap

Answer 3

EOP-C4

Question 4

Middle 3rd trap

Answer 4

C5-T4

Question 5

Lower 3rd of trap

Answer 5

T5-T12

Question 6

Innervation of trap

Answer 6

Accessory nerve (cranial nerve XI)

Question 7

Blood supply for trap

Answer 7

-Transverse cervical artery from the subclavian artery (Transverse cervical vein carries it away)

Question 8

Action upper 3rd of trap

Answer 8

Shoulder elevation, clavicular elevation

Question 9

Action for middle third of Trap

Answer 9

• Shoulder elevation

- Upward scapular rotationScapular retraction

Question 10

Action lower 3rd of Trap

Answer 10

• Shoulder and scapular depression

- Upward scapular rotation