Question 16 Which of the following pairings of muscle groups and actions is incorrect? Anterior compartment of the thigh - extension at the knee Medial compartment of the thigh - adduction of the leg Posterior compartment of the thigh - flexion at the hip Anterior compartment of the arm - flexion at the elbow Question 17 Which of the following muscles is responsible for weak hip and knee flexion (when the knee is already bent) and external rotation of the leg? Gracilis Sartorius Rectus femoris Biceps femoris Question 18 Which of the following muscles is deepest in the anterior compartment of the thigh? Rectus femoris Vastus lateralis Vastus intermedius Vastus medialis
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- Review each option: - Anterior compartment of the thigh - extension at the knee: Correct, as the quadriceps muscles in the anterior compartment extend the knee. - Medial compartment of the thigh - adduction of the leg: Correct, as the adductor muscles in the Show more…
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Each muscle compartment of the thigh contains at least one muscle which functions to flex the knee. Which of the following INCORRECTLY identifies a muscle compartment and muscle which flexes the knee? More than one answer may apply. a. anterior compartment of the thigh - rectus femoris muscle b. anterior compartment of the thigh - sartorius muscle c. posterior compartment of the thigh - semimembranosus muscle d. posterior compartment of the thigh - biceps femoris/short head e. medial compartment of the thigh - adductor longus muscle f. medial compartment of the thigh - gracilis muscle 2. Which of the following muscles of the LEG crosses the knee joint? a. posterior tibialis muscle b. anterior tibialis muscle c. flexor digitorum longus muscle d. soleus muscle e. gastrocnemius muscle
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Muscles of the Lower Limb 9. Using the terms from the key on the right, correctly identify all the muscles provided with leader lines in the illustration below. 10. Use the key terms in question 9 to respond to the descriptions below. Key: a. adductor longus b. extensor digitorum longus c. fibularis longus d. gastrocnemius e. rectus femoris f. sartorius g. soleus h. tensor fascia lata i. vastus lateralis j. vastus medialis Descriptions: 1. Tailor's muscle 2. Lateral compartment muscles that plantar flex and evert the foot (two muscles) 3. Abducts the thigh to take the at ease stance 4. Flex the trunk onto the thigh, as in taking a bow (two muscles) 5. Posterior compartment muscles that plantar flex the foot (two muscles) 6. Adducts the thigh, as when standing at attention 7. Extends the toes 8. Extend leg and flex thigh (three muscles)
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