Gross Anatomy #2 – Superficial Back (2009)

Question 1

An 18-year-old male presents following a mountain biking accident. History reveals he
was thrown from the bike and landed on the side of his head (he was wearing a helmet).
Physical exam reveals a fracture clavicle. On a follow-up visit, the fracture has healed but
he has weakness in shrugging his shoulder and in retracting the scapula. Physical exam
reveals atrophy of the trapezius. What nerve was most likely damaged in the accident?
a) Dorsal scapular nerve
b) Suboccipital nerve
c) Greater occipital nerve
d) Lesser occipital nerve
e) Spinal accessory nerve

Answer 1

e) Spinal accessory nerve

Question 2

Which of the following actions would mostly use the latissimus dorsi muscle?

a) Pushing off from a wall
b) Picking up a heavy bag
c) Pulling yourself up onto a ledge
d) Compressing a basketball in your hands
e) Doing pushups

Answer 2

c) Pulling yourself up onto a ledge

Question 3

Which of the following attaches on the floor of the intertubercular groove of the
humerus?
a) Trapezius
b) Latissimus dorsi
c) Levator scapula
d) Rhomboids
e) Serratus posterior superior

Answer 3

b) Latissimus dorsi

Question 4

What nerve innervates the rhomboid major muscle?

a) Dorsal scapular nerve
b) Suboccipital nerve
c) Greater occipital nerve
d) Lesser occipital nerve
e) Spinal accessory nerve

Answer 4

c) Greater occipital nerve

Question 5

Hernias in the lumbar triangle include Petit (inferior lumbar triangle) and Grynfeltt-
Lesshaft (superior lumbar triangle). Which of the following is NOT a border of the
lumbar triangle?
a) Internal abdominal oblique
b) External abdominal oblique
c) Iliac crest
d) Lumbar spinous processes
e) Latissimus dorsi

Answer 5

d) Lumbar spinous processes

Question 6

How many ribs does serratus posterior (superior or inferior) attach to?

a) 1
b) 2
c) 3
d) 4
e) 5

Answer 6

d) 4

Question 7

In the anatomical variation of the transverse cervical artery, a superficial cervical
artery would arise from the thyrocervical trunk going to the ____ muscle and a
descending scapular artery would arise from the subclavian artery going to the ____
muscle.
a) Rhomboid; Serratus posterior superior
b) Rhomboid; Trapezius
c) Trapezius; Serratus posterior superior
d) Serratus posterior superior; Rhomboid
e) Trapezius; Rhomboid

Answer 7

e) Trapezius; Rhomboid