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Questions and Answers
Which of the following muscles is part of the anterior compartment of the thigh?
Which of the following muscles is part of the anterior compartment of the thigh?
- Gracilis
- Biceps femoris
- Sartorius (correct)
- Adductor longus
The primary function of the thigh muscles is to assist with flexion of the knee.
The primary function of the thigh muscles is to assist with flexion of the knee.
False (B)
What is the function of the hamstring muscles?
What is the function of the hamstring muscles?
Extend hip and flex knee
The ___________ muscle is responsible for adducting the thigh.
The ___________ muscle is responsible for adducting the thigh.
Match the following thigh muscles with their compartments:
Match the following thigh muscles with their compartments:
Flashcards
What is the primary function of the thigh muscles?
What is the primary function of the thigh muscles?
The primary function of the thigh muscles is to control the movement of the knee joint, while also playing secondary roles at the hip joint.
How are the muscles of the thigh organized?
How are the muscles of the thigh organized?
The thigh muscles are organized into three compartments: anterior, medial, and posterior. Each compartment houses muscle groups with specific functions.
What muscles extend the knee joint?
What muscles extend the knee joint?
The quadriceps femoris and sartorius muscles are responsible for extending the knee joint.
What muscles are responsible for adducting the thigh?
What muscles are responsible for adducting the thigh?
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What muscles flex the knee and extend the hip?
What muscles flex the knee and extend the hip?
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Study Notes
Thigh Muscles
- Thigh muscles primarily function on the knee joint, and secondarily on the hip joint.
- The thigh muscles are grouped into three compartments: Anterior, Medial, and Posterior.
Anterior Compartment
- Sartorius: Originates at the ASIS, inserts on the proximal medial tibia, and functions in flexing, abducting, and laterally rotating the hip, as well as flexing the knee.
- Rectus Femoris: Originates at the AIIS, inserts on the tibial tuberosity, and extends the knee and flexes the hip.
- Vastus Lateralis: Originates at the greater trochanter and linea aspera, inserts on the tibial tuberosity, and extends the knee.
- Vastus Medialis: Originates at the intertrochanteric line and linea aspera, inserts on the tibial tuberosity, and extends the knee.
- Vastus Intermedius: Originates at the femoral shaft, inserts on the tibial tuberosity, and extends the knee.
Medial Compartment
- Obturator Externus: Originates at the obturator foramen, inserts on the trochanteric fossa, and functions to laterally rotate the hip.
- Pectineus: Originates at the superior pubic ramus, inserts at the pectineal line, and flexes the hip.
- Gracilis: Originates at the inferior pubic ramus, inserts on the proximal medial tibia, and flexes the knee.
- Adductors: Originate at the inferior pubic ramus, insert on the linea aspera, and adduct the thigh.
Posterior Compartment
- Semitendinosus: Originates at the ischial tuberosity, inserts on the proximal tibial medial surface, and extends the hip and flexes the knee.
- Semimembranosus: Originates at the ischial tuberosity, inserts on the tibial medial condyle, and extends the hip and flexes the knee.
- Biceps Femoris: Originates at the ischial tuberosity and linea aspera, inserts on the head of the fibula, and extends the hip and flexes the knee.
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