1 BACK 5 LOWER LIMB
Questions, 1 Questions, 233
Answers, 20 Answers, 258
2 THORAX 6 UPPER LIMB
Questions, 39 Questions, 287
Answers, 67 Answers, 319
3 ABDOMEN 7 HEAD AND NECK
Questions, 103 Questions, 355
Answers, 139 Answers, 401
4 PELVIS AND 8 EMBRYOLOGY
PERINEUM Questions, 459
Questions, 191 Answers, 467
Answers, 206
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BACK
the patient the emergency medicine physician con-
INTRODUCTION cludes that the serratus anterior muscle is damaged. Which
of the following functions does the serratus anterior
First Order Question muscle serve?
1 A 35-year-old man is admitted to the emergency A. Adducts scapula
department after a severe car crash. After examining the B. Depresses ribs
patient the emergency medicine physician con- cludes
C. Protraction and rotation of scapula
that the serratus anterior muscle is damaged. Which of the
following nerves innervates the serratus anterior muscle? D. Elevation of scapula
A. Long thoracic E. Adducts, extends, and medially rotates arm
B. Axillary
Explanation
C. Spinal accessory C: The functions of the serratus anterior are protraction
D. Dorsal scapular and rotation of the scapula. The rhomboid major and
E. Thoracodorsal minor adduct the scapula, the serratus posterior infe- rior
depresses the lower ribs, the levator scapulae ele- vates
the scapula, and the latissimus dorsi adducts, extends,
Explanation
and medially rotates the arm.
A: The long thoracic is the only nerve that innervates
the serratus anterior. The axillary nerve innervates the
Second Order Question
deltoid, the spinal accessory nerve innervates the ster-
3 A 35-year-old man is admitted to the emergency
nocleidomastoid and trapezius, the dorsal scapular nerve
department after a severe car crash. After examining the
supplies the rhomboid muscles and levator scap- ulae, and
patient the emergency medicine physician con- cludes
the latissimus dorsi is the muscle supplied by the
that the serratus anterior muscle is damaged. Which of the
thoracodorsal nerve.
following functions will the patient most likely be unable
to perform?
First Order Question A. Retraction of the scapula
2 A 35-year-old man is admitted to the emergency
department after a severe car crash. After examining B. Elevation of the scapula
C. Depression of the scapula 1