WorksheetsBrachial, Lumbar, and Sacral Plexus – BOMS 2025
Total questions: 8
Worksheet time: 4mins
Which of the following muscles is innervated by both the median and ulnar nerves?
Flexor carpi radialis
Flexor digitorum superficialis
Flexor pollicis longus
Flexor digitorum profundus
A patient has difficulty abducting the arm beyond 15°, and electromyography shows reduced activity in the deltoid muscle. Which part of the brachial plexus is most likely injured?
Posterior cord
Lateral cord
Lower trunk
Upper trunk
The femoral nerve originates from which spinal roots, and what is its primary motor function?
L1-L2; adduction of the thigh
L2-L4; extension of the knee
L2-L4; plantarflexion of the foot
L4-S1; dorsiflexion of the foot
Following an improperly placed gluteal intramuscular injection, a patient develops foot drop and paresthesia over the dorsum of the foot. What is the most likely nerve injured?
Tibial nerve
Common fibular nerve
Superior gluteal nerve
Sural nerve
A lesion of the radial nerve in the radial groove of the humerus typically results in which clinical sign?
Ape hand
Claw hand
Wrist drop
Thenar atrophy
The sciatic nerve bifurcates into which two terminal branches, and at what typical anatomical level?
Tibial and femoral nerves; at the inguinal ligament
Pudendal and inferior gluteal nerves; at the piriformis
Obturator and femoral nerves; at the ischial spine
Common fibular and tibial nerves; at the popliteal fossa
A 70-year-old patient reports numbness in the 4th and 5th digits, worse at night, with hypothenar atrophy. Which of the following is the most likely site of nerve compression?
Cubital tunnel
Guyon’s canal
Radial groove
Carpal tunnel
After surgical repair of a femoral hernia, a patient complains of loss of sensation over the scrotum and upper medial thigh. What nerve is most likely involved?
Genitofemoral nerve
Ilioinguinal nerve
Obturator nerve
Lateral femoral cutaneous nerve
