trapezius

Question 1

trapezius origin

Answer 1

superior nuchal line of occipital bone, nuchal ligament and spines of all thoracis vertebrae

Question 2

trapezius insertion

Answer 2

spine of scapula and acromion, lateral portion of clavicle

Question 3

nerve

Answer 3

cranial nerve XI – the spinal accessory nerve

Question 4

trapezius function

Answer 4

elevates, retracts and superiorly rotates scapula to face the glenoid cavity skyward (needed for full abduction of the arm to occur); the trapezius can also depress the scapula (when just the inferior fibers are used)

Question 5

trapezius arterial supply

Answer 5

superficial branch of transverse cervical artery