40 Questions
Which nerve is responsible for the innervation of the gluteus medius and gluteus minimus muscles?
Superior gluteal nerve
What is the largest nerve originating from the lumbosacral plexus?
Sciatic nerve
Which of the following nerves innervates the muscles of the posterior thigh?
Posterior femoral cutaneous nerve
Which of the following is the most superficial structure in the popliteal fossa?
Tibial nerve
Which nerve is responsible for the innervation of the gluteus maximus muscle?
Inferior gluteal nerve
What is the terminal branch of the sciatic nerve that innervates the muscles of the posterior compartment of the leg?
Tibial nerve
Which nerve is responsible for the innervation of the tensor fasciae latae muscle?
Superior gluteal nerve
Which of the following nerves is responsible for the innervation of the muscles in the anterior compartment of the leg?
Common peroneal (fibular) nerve
Which of the following muscles is NOT innervated by the tibial nerve?
Gluteus maximus
Which of the following is NOT a motor branch of the deep fibular (peroneal) nerve?
Flexor hallucis longus
Which of the following is a sensory branch of the sural nerve?
Lateral sural cutaneous nerve
What is the primary function of the plantar nerves (medial and lateral) in the foot?
Motor innervation of the intrinsic foot muscles
Which of the following is NOT a motor branch of the superficial fibular (peroneal) nerve?
Extensor digitorum brevis
What is the primary function of the sural nerve and its branches?
Sensory innervation of the posterior and lateral aspects of the leg and foot
Which of the following nerves is responsible for the dorsiflexion of the foot?
Deep fibular (peroneal) nerve
What is the primary function of the structures passing anterior to the medial malleolus?
Motor innervation of the intrinsic foot muscles
What is the primary function of the obturator nerve?
Adduction and medial rotation of the thigh
What is the main nerve of the perineum responsible for sensory branches to the skin of the perineum and external genital organs?
Pudendal nerve
Which muscle is innervated by the accessory obturator nerve?
Pectineus
Which nerve root(s) contribute to the formation of the obturator nerve?
L3-L4
In a patient with an inferior gluteal nerve injury, which muscle is affected?
Gluteus maximus
Which clinical sign is associated with an injury to the obturator nerve?
Diminished adduction and lateral rotation of the thigh
Which nerve injury can result in foot drop due to gravity-induced sensory loss in the leg and foot?
Common Peroneal nerve
Which nerve root(s) contribute to the formation of the sacral plexus?
S1-S4
What is the clinical significance of a positive Trendelenburg sign?
Weakness of gluteus medius and minimus muscles
Which nerve branch of the sacral plexus innervates the piriformis muscle?
Nerve to piriformis
Which muscle is paralyzed in a patient with superior gluteal nerve injury when raising the foot on the normal side?
Gluteus maximus
What muscles are affected by a sciatic nerve injury resulting in leg paralysis?
All muscles in the leg except those innervated by the tibial nerve
Which nerve branch of the sacral plexus is primarily responsible for the sensory innervation of the posterior thigh?
Posterior femoral cutaneous nerve
Which nerve branch of the sacral plexus innervates the external anal sphincter and perineal muscles?
Pudendal nerve
What is the nerve responsible for innervating the obturator internus muscle?
Nerve to obturator internus
Which muscle action results in fixing the 12th rib?
Quadratus lumborum
Which muscle acts to balance the trunk?
Psoas major
Which nerve innervates the Iliopsoas muscle?
Femoral nerve
Which nerve innervates the adductor longus and gracilis muscles?
Obturator nerve
Which muscle extends and laterally flexes the vertebral column?
Quadratus lumborum
What is an additional function of the Psoas major muscle besides acting inferiorly with the iliacus?
Balances the trunk
Which nerve provides sensory branches to the skin over the anterolateral aspect of the thigh until the knee joint?
Lateral femoral cutaneous nerve
Which muscle is responsible for flexing the thigh and stabilizing the hip joint?
Iliacus
What is the function of the genitofemoral nerve's genital branch?
Supplying sensory innervation to mons pubis and labium majus
Test your knowledge on the anatomy and clinical implications of the obturator nerve, its branches, and associated muscles. Learn about potential injuries and their effects on motor and sensory functions.
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