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Questions and Answers
Which muscles belong to the anterior thigh?
Which muscles belong to the anterior thigh?
- Semimembranosus, Semitendinosus, Vastus Medialis
- Vastus Medialis, Semimembranosus, Gastroc-soleus
- Vastus Medialis, Vastus Lateralis, Vastus Intermedius (correct)
- Gastroc-soleus, Semitendinosus, Vastus Lateralis
What is the primary nerve innervating the muscles of the anterior thigh?
What is the primary nerve innervating the muscles of the anterior thigh?
- Sciatic nerve (L4 - S3)
- Obturator nerve (L2 - L4)
- Femoral nerve (L2 - L4) (correct)
- Tibial nerve (L4 - S3)
Which of the following muscles is NOT part of the posterior thigh?
Which of the following muscles is NOT part of the posterior thigh?
- Semimembranosus
- Semitendinosus
- Biceps Femoris
- Vastus Intermedius (correct)
Which group of muscles is referred to as the Triceps Surae?
Which group of muscles is referred to as the Triceps Surae?
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Which statement about the muscles listed is true?
Which statement about the muscles listed is true?
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Study Notes
Muscles of the Lower Extremity
- Muscle Groups: Lower extremity muscles include groups categorized by location: anterior thigh, posterior thigh, gluteal region, extrinsic foot muscles, and intrinsic foot muscles.
Muscles of the Anterior Thigh
- Vastus Medialis, Vastus Lateralis, Vastus Intermedius: Key muscles responsible for knee extension.
- Innervation: All innervated by the Femoral nerve (L2 - L4), which plays a crucial role in motor function of the anterior thigh.
Muscles of the Posterior Thigh
- Semimembranosus and Semitendinosus: Important for knee flexion and medial rotation of the hip.
Muscles of the Gluteal Region
- Comprises 9 muscles, which contribute to hip movements and stabilization.
Extrinsic Muscles of the Foot
- Gastroc-Soleus Complex: Known as Triceps Surae, essential for plantar flexion of the foot.
Intrinsic Muscles of the Foot
- Provides stabilization and movement control for the toes, enhancing balance and mobility.
Review Date
- Content updated and reviewed as of 5/18/22.
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