BRS Anatomy Practice Questions Flashcards
A 27yo patient exhibits a loss of skin sensation and paralysis of muscles on the plantar aspect of the medial side of the foot. Which of the following nerves is most likely damaged? A. Common peroneal B. Tibial C. Superficial peroneal D. Deep peroneal E. Sural
B. The common peroneal nerve divides into the deep peroneal nerve, which
innervates the anterior muscles of the leg and supplies the adjacent skin of the fi rst and sec-
ond toes, and the superfi cial peroneal nerve, which innervates the lateral muscles of the leg
and supplies the skin on the side of the lower leg and the dorsum of the ankle and foot. The
sural nerve supplies the lateral aspect of the foot and the little toe.
A patient with a deep knife wound in the buttock walks with a waddling gait that is characterized by the pelvis falling toward one side at each step. Which of the following nerves is damaged? A. Obturator B. Nerve to obturator interns C. Superior gluteal n D. Inferior gluteal n Femoral n
D
A patient is unable to prevent anterior displacement of the femur on the tibia when the knee is flexed. Which of the following ligaments is most likely damaged? A. Anterior cruciate B. Fibular collateral C. Patellar D. Posterior cruciate E. Tibial collateral
A
A 41yo man was involved in a fight and felt weakness in extending the knee joint. On examination he was diagnosed with a lesion on the femoral n. Which of the following symptoms would be a result of this nerve damage?
A. paralysis of the posts major muscle
B. loss of skin sensation on the lateral side of the foot
C.loss of skin sensation over the greater trochanter
D. Paralysis of the vastus laterals muscle
E. Paralysis of the tensor fascia latae
D.
A 47 yo woman is unable to invert her foot after she stumbled on her driveway. Which of the following nerves are most likely injured? A. Superficial and deep peroneal B. Deep peroneal and tibial C. Superficial peroneal and tibial D. Medial and lateral plantar E. Obturator and tibial
A
A 22yo patient is unable to unlock the knee joint to permit flexion of the leg. Which of the following muscles is most likely damaged? A. rectus femoris B. semimembranosus C. popliteus D. Gastrocnemius E. Biceps femoris
C
A patient presents with sensory loss on the adjacent sides of the great and second toes and impaired dorsiflexion of the foot. These signs probably indicate damage to which of the following nerves A. Superficial peroneal B. Lateral plantar C. Deep peroneal D. Sural E. Tibial
C
A motorcyclist falls from his bike in an accident and gets a deep gash that severs the superficial peroneal nerve near its origin. Which of the following muscles is paralyzed? A. peroneus longus B. Extensor hallucis longus C. Extensor digitorum longus D. Peroneus Tertius E. Extensor digitorum brevis
A
A 67yo patient has been given a course of antibiotics by gluteal intramuscular injections after a major abdominal surgery. To avoid damaging the sciatic nerve during an injection, the needle should be inserted into which of the following areas?
A. Over the sacrospinous ligament
B. Midway between the ischial tuberosity and lesser trochanter
C. Midpoint of the gemelli muscles
D. Upper lateral quadrant of the gluteal region
E. Lower medial quadrant of the gluteal region
D
A 20yo patient cannot flex and medially rotate the thigh while running and climbing. which of the following muscles is most likely damaged? A. Semimembranous B. Sartorius C. Rectus femoris D. Vastus intermedius E. Tensor fascia latae
B
A 21 yo man was involved in a motorcycle accident, resulting in destruction of the groove on the lower surface of the cuboid bone. Which of the following muscle tendons is most likely damaged? A. Flexor hallucis longus B. Peroneus brevis C. Peroneus longus D. Tibialis anterior E. Tibialis posterior
E
